When it comes to Hublot’s most iconic series of watches, the Big Bang, I wonder what is the first impression that comes to your mind? Is it the cool design that brings visual shock? Or is it the technological aesthetic created by innovative materials? Or is it the trendy symbol attribute spawned by the fusion of artistic concepts? In fact, these characteristics are not only the core labels of the Big Bang series, but also an indispensable factor for Hublot to become an innovator in the watch industry. It is precisely with these distinctive creativity that Hublot has continued to attract watch fans around the world to explore its unique avant-garde charm since its birth.
Big Bang also celebrates its 20th anniversary this year. For this reason, Hublot specially released a series of anniversary models at the Geneva Watches and Miracles Show in April. This new set of works directly brings back the classic design of the original Hublot Big Bang watch in 2005, such as the ceramic knurled bezel, plaid dial and other iconic elements. It also uses a new 43 mm size, which is directly different from the previous 42, 44 and 45 mm, and uses the second generation UNICO self-produced chronograph movement.
The watch case also uses five Hublot representative materials: titanium case, black ceramic, red ceramic, king gold, and magic gold. The public price starts from 152,000 yuan and is available in limited quantities. Hublot deeply integrates the latest watchmaking technology and material configuration with Big Bang’s classic design, reshaping the classics and giving them a new look, creating a “masterpiece” that condenses the brand’s twenty years of innovation and development.
In addition to this new set of works, on this anniversary today, our Watch House will review the development of the Big Bang series of watches with you. From the three aspects of innovative materials, rich functions and cross-border cooperation, we will talk about why the Hublot Big Bang series was born twenty years ago and how it has step by step to today, opening up a new generation of innovation in high-end watchmaking and becoming a benchmark for the industry!
BIG BANG——The big bang is born
Hublot was born in 1980. Compared with many watch brands with a century-old history, Hublot is too young. However, young people are often more creative. When they first enter the industry, they are not limited by past success or failure. Hublot has indeed proved what it means to “debut at the peak”. At that time, it paired gold and rubber, two seemingly incompatible materials, which directly amazed the entire watch industry.
After the millennium, cutting-edge watchmaking style brands led by Hublot continued to emerge. Hublot launched the Big Bang series of watches in 2005, which directly drew a lot of inspiration from the brand’s first watch. It used the classic porthole-style round case as the base, brought back design elements such as bezel screw fixation and natural rubber straps, and injected more modern elements and aesthetic concepts, once again breaking the shackles of traditional watch design.
Jean-Claude Biver, CEO of Hublot at the time, and Ricardo Guadalupe, then general manager, jointly gave it the name “Big Bang”. This naming echoed the cosmology and aptly predicted the disruptive wave that this series of watches set off in the watchmaking industry like a supernova explosion, detonating the watchmaking industry and affecting the development path of the entire industry. It laid the foundation for the explosive popularity of sports watches, including the Hublot Big. The Bang Bang is still a model for measuring the aesthetic value of modern sports watches.
BIG BANG——Material magic
As Hublot said, the Big Bang series of watches is like a porthole, fully demonstrating Hublot’s watchmaking vision and looking forward to the future of the watchmaking industry. In the field of watch material innovation, Hublot has always been a pioneer in the watchmaking industry, and is committed to breaking the limitations of traditional watch materials and exploring more possibilities in watch materials. Materials are also a core advantage of Hublot’s “no one has anything, but I have it”. Hublot has specially established a metallurgical and materials laboratory to work closely with the R&D department and its own foundry. Over the past 20 years, Big Bang, with its cool shape and extraordinary expressiveness, has also become a stage for Hublot to demonstrate its pursuit of innovative material technology. Many materials were first used on Big Bang.
Let’s list a few of Hublot’s most representative material applications. The first is rubber. The reason why Hublot became so popular is that it relies on rubber to achieve an ingenious combination of functionality and design aesthetics. At the same time, I also think that Hublot’s rubber straps are very comfortable. Needless to say, this point is really widely recognized by watch friends.
Taking the original Big Bang watch in 2005 as an example, it benefited from the innovative application of materials. The use of different materials directly enriched the visual effect and complemented the main design. It directly won the Best Design Award at the Geneva Haute Horlogerie Awards that year. The sandwich case structure of the Big Bang is also an excellent space for Hublot to display its material creativity. Take the rose gold model as an example. The upper and lower layers are made of rose gold, sandwiching the Kevlar fiber middle structure of the same material as the bulletproof vest. You can imagine the effect of making the case strong and strong enough to stop bullets. And at that time, Hublot had already used a special knurled ceramic bezel for Big Bang.
Hublot launched the BIG BANG all-black ceramic watch in 2006
Hublot’s current achievements in the field of materials include transparent sapphire and ceramics, which are two major materials.
So what are the strengths of Hublot’s ceramic watches? Many watch brands are now beginning to create more expressive colored ceramics. Although it may sound simple, the development and production process of colored ceramics is still quite difficult. To this day, not many brands understand it. This includes the ceramic watches of a large number of watch brands. To this day, they still need to purchase ceramic components from third-party ceramic manufacturers. Only Hublot has the ability to independently and fully produce ceramic watches. With Big Bang color ceramic watches have been launched in a variety of colorful colors such as cement gray, beige, yellow, red, sky blue, mint green, etc. Many of these ceramics are exclusive to Hublot.
Hublot 42mm BIG BANG UNICO sky blue watch
Ceramic itself has high hardness and strong wear resistance, so you don’t have to worry about scratches and wear for daily wear. However, there are also corresponding problems. Polishing ceramic watch cases will be more time-consuming and laborious. It is often said in the industry that it takes 4-8 times as much time as metal watch cases. However, Hublot still insists on decorating according to strict craftsmanship standards, allowing the fusion of tradition and innovation to shine. The final effect still speaks for itself. Hublot will decorate and polish all ceramic watch cases to be complex and delicate, from brushing to angular polishing to sandblasting. In addition, the BIG BANG case type has its own layers, with many layers and corners, which greatly increases the texture and luxury, forming an absolute advantage over other ceramic watches on the market.
This year in 2025, Hublot once again led the development of material technology in the watchmaking industry, bringing the dazzling technology of magic ceramics. Hublot said that during the firing and molding process of this ceramic, the difficulty is that each pigment used for coloring must be fired at a different temperature. The challenge is also to find the ideal balance point to ensure that a finished product with uniform color and luster can be obtained every time. However, these are still not difficult for Hublot. The blue circular pattern surrounds the dark gray ceramic bezel and blends perfectly. Hublot also uses materials to create a visual aesthetic similar to pop art. I also think that Magic Ceramics can create more colors and patterns in the future, and has great development potential.
Hublot’s vigorous research and development of ceramic case technology also gave Hublot the idea of mixing ceramic powder with other materials. Precious metals are the mainstream materials in the field of watches. In the past two years, we have also seen a resurgence of gold watches. However, gold with scratch resistance does not exist in nature. Even though platinum is often said to have high hardness, it still needs to be scratched. So Hublot thought of a way to make the impossible possible. In 2012, Hublot launched magic gold material on the Big Bang watch in cooperation with Ferrari.
Hublot’s first and patented 18K synthetic gold material is the world’s first synthetic gold material with anti-scratch properties. We all know that the precious metal materials commonly used in watches are actually added according to the different proportions of the formulas of each brand, resulting in different final effects. However, everyone often only pays attention to the difference in appearance. However, Hublot engineers directly used pure gold and boron carbide, a super-hard high-tech ceramic material, to play “alchemy” and used innovative synthesis to give Magic Gold the beauty of precious metals. It also has the scratch-resistant properties of ceramics, giving it the dual advantage of being born. Moreover, the dark tone of magic gold is completely different from the luster of common precious metals. I would describe this dark gold tone as special enough, with a bit of iridescent effect under the light. It really has a magical presence that continues to attract you to look at it and never get tired of it.
For Hublot, every innovative material is worth trying, because different materials have their own unique characteristics and advantages, but Hublot’s core appeal has always been to find materials that can not only meet the hard requirements of watches, but also meet the good-looking appearance, such as sapphire crystal case.
Synthetic sapphire crystal watch case is currently the most innovative material in the watchmaking industry. There is no one among them. There are even fewer brands that can maturely apply it. You can count them on one hand. The sapphire crystal case is extremely hard, with a Mohs hardness level of 9.0, and is resistant to bumps and scratches. Of course, being so hard also means that it is difficult to process. It is composed of aluminum oxide crystals, and its molecular structure has a crystal clear transparent effect. Hublot couldn’t put it down. In the end, Hublot not only solved the problem of early sapphire cases turning yellow after a long time with its strength, but also launched various colored transparent sapphire cases, which are very complete. The aqua sapphire, developed in recent years, is refreshing and clear, as transparent as ice wrapped around the movement.
Including titanium, this kind of aerospace material with its own lightness has almost become Hublot’s regular material. Basically, Big Bang Unico’s sales are all titanium models.
Moreover, as Hublot’s technical strength soared, it gradually began to be no longer satisfied with the routine application of innovative materials. Another example is carbon fiber, a material that can help watches pursue extreme lightweighting. Hublot has already used it on the BIG BANG tourbillon chronograph watch that it cooperated with Ferrari in 2011. Then, just like colored ceramics, Hublot also added colors to carbon fiber.
The production process of carbon fiber watch cases is to place carbon cloth fragments and wire harnesses in the watch case mold, bond them with polyester fiber, heat and pressurize them, and then process them into shape. Although carbon fiber is light enough, it often has a single color. There are only two common texture effects: woven carbon cloth and forged carbon. Hublot thought of adding various colored microglass fibers during the carbon fiber forging process, which perfectly demonstrates the art of fusion. In 2014, Hublot launched the Big Bang Soul Series watch with a barrel-shaped case. The unique shell design itself has more creative space. In recent years, Hublot has also been particularly fond of using colored carbon fiber materials for it, making the expressiveness of the watch even higher.
In fact, how strong is Hublot’s material strength? Even Patek Philippe’s former president Philippe Stern once said in an interview that the reason why Patek Philippe does not make new materials such as ceramics is because there are watch brands like Hublot that are very advanced in innovative materials and do them well enough. Patek Philippe does not need to get involved anymore.
BIGBANG – complex genes
If innovative materials are the foundation of Hublot, then the exploration of movement precision and complex functions constitutes the core driving force for its continuous breakthroughs. When the Big Bang series was launched, it was based on chronograph watches, but Hublot did not stop at conventional general-purpose movements such as ETA/Valjoux 7750. Instead, in order to achieve higher-level watchmaking pursuits, Hublot began to join hands with BNB Concept, Switzerland’s top movement research and development institution, with the goal of developing a self-produced chronograph movement and laying the foundation for Hublot’s self-produced complex function movements.
Hublot R&D Director Mathias Buttet
However, in 2010, BNB Concept fell into a business crisis and was on the verge of bankruptcy. At that time, Biver, the then president of Hublot, decided to acquire the movement factory in order to help its partners solve their difficulties, and at the same time, based on the consideration of comprehensively improving the brand’s watchmaking technology and accelerating the process of self-made movements. After the acquisition, it has undoubtedly significantly strengthened the research and development capabilities of Hublot’s self-produced complex movements. As one of the founders of BNB Movement Factory, Mathias Buttet is still the director of Hublot’s research and development department. Many of Hublot’s iconic complex function watches are produced by the R&D team led by him.
In the same year, Hublot’s first generation Unico flyback chronograph automatic movement HUB1240 was officially released, which also opened the era of Hublot’s self-produced movements. The biggest feature of the Unico movement is the direct selection of modular design, which once again achieves the perfect fusion of aesthetics and functionality. This is due to the fact that the timing components of the movement are all installed on the dial side of the watch. When Big Bang Unico directly uses the movement as a hollow dial, all important components of the movement are visible on the front dial, giving it a full mechanical feel. However, chronographs with the same cutting-edge and cool style on the market generally focus on the movement on the back of the watch.
The timing module structure on the front of the UNICO movement dial
Notes from Yan Danping
The Unico chronograph movement uses a combination of cylindrical wheels and double horizontal clutch timing components. The most important thing is the double horizontal clutch. In addition to the conventional chronograph second wheel and second wheel clutch, the Unico chronograph minute wheel directly clutches the barrel and is transmitted directly from the power source without passing through other gear trains. This avoids the decline in the swing of the movement. It is also a chronograph structure that consumes less power. The operation feels extremely smooth. The advanced flyback function can help the wearer to continue timing more accurately without stopping. The cylindrical wheel is located at 6 o’clock on the dial, the running seconds wheel is located just below the small seconds hand at 9 o’clock, the chronograph clutch gear is at 8 o’clock, and the chronograph seconds wheel is in the center of the dial. When the chronograph function button is pressed, the clutch between the travel seconds wheel and the chronograph seconds wheel, the rotation of the cylindrical wheel, and even the movement of the hollow calendar ring surrounding the outer ring of the disk, all the wonderful mechanical operations can be seen at a glance. The Unico movement is Hublot’s cool hollow disk design, which greatly increases playability. This is a unique advantage that other chronographs do not have.
The Unico movement completed an important upgrade in 2018. Currently, all series of Big Bang watches are equipped with the second-generation Unico movement. Compared with the first generation, the upgraded Unico movement has achieved a breakthrough in size. Both the diameter and thickness have been reduced. The thickness has been reduced by 1.3 mm to 6.75 mm. This improvement allows it to be directly adapted to the smaller Big Bang watch and complies with the trend of watch sizes beginning to return to rationality.
The biggest upgrade of the second-generation Unico movement is the timing clutch gear with specially constructed elastic teeth. This technical feature can also be seen directly from the 8 o’clock position on the dial. The elastic gear is composed of strips of metal wires to form a unique hollow structure, which is very recognizable. This design can significantly reduce the abnormal jump problem of the central chronograph second hand caused by gear collision when the clutch gear and the chronograph seconds wheel are meshed, and at the same time effectively alleviate the phenomenon of torque drop. At present, there are very few watch brands that can apply similar elastic gear technology. Only mainstream chronograph movements such as Rolex 4130 and Patek Philippe 26-330 are equipped with similar innovative structures like Hublot.
It is worth noting that Unico movements have used silicon escapements since their launch. The blue-purple silicon escapement wheel and silicon escapement fork are particularly noticeable in the metallic movement. Although silicon hairsprings that provide anti-magnetic capabilities are not used due to patent restrictions, the silicon escapement system can help the Unico movement reduce friction and improve the transmission efficiency of the movement by virtue of its smooth surface, low friction, ultra-light weight and no need for lubrication.
Also benefiting from the excellent modular design concept of the Unico movement, which leaves room for the movement, Hublot is better able to expand complex functions for the Big Bang watch, such as launching a multi-time zone display watch and a golf watch equipped with a dedicated module to accurately record the number of golf holes and swings. On the occasion of the 10th anniversary of the birth of the Big Bang series, Hublot launched the first perpetual calendar moon phase chronograph watch.
And not only the perpetual calendar, Big Bang is involved in all three traditional complex functions, but I personally think that Hublot’s best one is the cathedral minute repeater. In 2022, Hublot launched its first full-body ceramic minute repeater watch. There are not many sports watches with minute repeaters, and among the materials for repeaters, the best sound-conducting material is actually metal, and steel is even better. For watch brands, if they connect ceramics with the timekeeping function, the most difficult thing is to achieve a clear and powerful timekeeping sound in a pure ceramic case. Therefore, it is rare to connect ceramics with the timekeeping function, but Hublot has overcome this difficulty with resonance.
The cathedral minute repeater is also quite different from the conventional minute repeater. Hublot has two cathedral gongs inside the case, one for telling the time and one for telling the minutes. The length is twice that of ordinary gongs. The purpose of this design is to create a rich sound quality effect for the watch. When the hammer strikes the gong, it gives the wearer an auditory experience of hearing the hourly chime in a church. There is also a flying tourbillon on the hollow plate in the lower half of the watch. Hublot can easily carry two of the three major complex functions. Even so, the watch can also provide 80 hours of long-lasting power reserve when fully wound.
Another aspect of Hublot that cannot be ignored in the field of complex functions is that Hublot will launch some innovative functions in a unique way, such as long-term storage. Maybe when it comes to power reserve, everyone’s first reaction is that it is not a complicated watch, and that’s right, because the power reserve level of a watch is usually 3 days, 72 hours, 80 hours, and the longest is generally about 7 days. But if we are talking about a super long power reserve that is above 7 days, and can be doubled to 14 days, or even dozens of days, then how to solve the power source? The complexity of the movement has also increased. The Lafa watch once created by Hublot has a power reserve of 50 days. In order to make the watch more suitable for daily wear, Hublot specially developed and used the Big Bang MP-11 watch.
HUB9011 manual winding skeleton movement power transmission structure
Notes from Yan Danping
In terms of movement structure, MP-11 specially uses 7 barrels, which are vertically connected in series and placed in a 45 mm case. Stacking barrels is not as simple as everyone thinks. Hublot also needs to use 90-degree spiral gear technology with special teeth for transmission. The teeth are also specially shaped and are used in two types on the MP-11 watch. Ultimately, this helps the vertical barrels mesh with the horizontal gears to transmit power. In order to allow the watch to accommodate seven vertical barrels, Hublot also created a sapphire mirror and case with a curved outline, which greatly increased the difficulty of manufacturing.
However, although the MP-11 series follows the Big Bang design language and is classified into this series, the MP-11 series is positioned as Hublot’s most cutting-edge watchmaking technology and has always maintained a high threshold for collection. In order to make long power reserve watches more suitable for daily wearing scenarios and reduce the difficulty of purchasing, Hublot launched the Big Bang MECA-10 in 2016, which has a long power reserve of 10 days and uses a unique building block structure on the movement.
Comparison between the old and new generations of Big Bang MECA-10
Left: Second generation Big Bang MECA-10 42mm
Right: First generation Big Bang MECA-10 45mm
At the beginning of this year, Hublot further launched the new and upgraded Big Bang MECA-10, which uses a more sophisticated 42mm case design to adapt to the wrist size of most wearers, achieving a double breakthrough in hard-core dynamic storage technology and wearing comfort. In my opinion, the MECA-10 series has already become the core style in the Big Bang watch matrix with its daily innovation of long power storage technology.
From left to right: Hublot brand friend Ma Yansong, Hublot brand ambassador Lin Xiaojun, Hublot CEO Julien Tornare, Hublot brand ambassador Lang Lang, Hublot Greater China Managing Director Omar Choudhary, Hublot brand friend Zhang Zhizhen
BIGBANG——The art of fusion
In the field of watches, industry collaborations have been booming in recent years. Various creative collisions have continuously expanded the boundaries. Only you can imagine that there is no cooperation that cannot be achieved by watches. With the increase in attempts from all walks of life, there are more and more interesting collaborations. In this cross-border wave, Hublot is undoubtedly the leader.
Hublot partners with cigar brand Arturo Fuente
Launch of the BIG BANG UNICO Arturo Fuente ceramic watch
In the eyes of friends, Hublot is the best brand for cross-border cooperation. The art of fusion, this watchmaking concept is by no means limited to material innovation and complex functions, but transforms the brand’s love for art, football, tennis, track and field, food, music and other diverse fields into in-depth dialogue with different circles, integrating it into watch design with a new creative perspective, constantly breaking through the limitations of materials, fusion and aesthetics. In the 20 years since the birth of the Big Bang series, Big Bang has also transformed into a creative platform that accommodates many amazing creative ideas from artists, athletes, luxury brands, charity organizations and other fields.
BIG BANG UNICO Novak Djokovic watch
However, due to space constraints, we will only introduce to you two cross-border masterpieces of BIG BANG today. One is the top of the pyramid in the modern art of watches, and the other is the top of the pyramid in the sports equipment of watches.
A representative example of cross-border cooperation with the sports field is the limited edition BIG Bang unico launched for brand ambassador Novak Djokovic. In order for Hublot to design a mechanical watch for Xiaode that can really be worn to play tennis matches and provide a light and comfortable wearing experience, this piece is positioned as an ultra-light sports watch, so Hublot has made great efforts to reduce its weight in all aspects.
What are the really powerful top watch brands doing now? It is working hard on research and development in the three directions of complex functions, ultra-light and ultra-thin, but it is even more difficult to achieve any breakthrough innovation. Hublot’s exploration of ultra-lightweight technology is also a road of improvement that lasted many years. It turned out that it tried its best to make a lot of extreme weight reduction for Ferrari cooperation watches, so that the watch can be as lightweight as a racing supercar in the hand, but it turned out that it only started from the surface material.
Now, Hublot first used reinforced resin to fuse the carbon fiber racket used by Xiaode, and disassembled the fragments of the POLO shirt he wore to create a new composite material. It is not only commemorative, but also when combined with the ultra-light elastic strap that comes with the watch, it weighs only 49.5 grams, which is lighter than a tennis ball. Secondly, although using Big bang The basics of the Unico chronograph are modified, but it also has a lot of Xiaode’s exclusive designs, such as the rare hollow case. The hollowing is just like the lightness of a racing car, including the timing buttons on both sides are also made like tennis balls. Because of the lightweight, these two buttons have been replaced with rubber materials. Coated with aluminum, Hublot pursues ultimate lightness and does not miss any opportunity to make the watch lighter, even the watch glass. Hublot no longer uses traditional sapphire crystal glass because it is too heavy, so it replaced it with tempered glass that is equally strong and only half the weight of sapphire.
Most of the traditional movements use brass splints. This is also a key factor why many watches cannot reduce the weight to less than 100 grams even if they use carbon fiber cases. Generally, if an ultra-light watch wants to be lighter, it must have a titanium movement. But this time Hublot used lighter aluminum material to make the movement splint. The Unico aluminum movement is not only light, but also achieves further weight reduction. Compared with the standard brass Unico movement, it reduces the weight by nearly one-third. At the same time, Hublot uses anodized aluminum technology, and also makes the movement colorful, echoing the blue theme of the entire watch, and the exterior and interior are the same.
The representative work of Hublot’s artistic design in the Big Bang series is none other than tattoos. In 2016, the brand launched an in-depth cooperation with Sang Bleu, a pioneering tattoo studio in London. Until 2023, the two parties have created three generations of Big Bang Sang Bleu tattoo watches. From the first generation, which is based on the Unico movement and abandons the timing module to use a dial structure with a turntable display, to the second generation, which returns to the Unico timing function, to the third generation, which uses a multi-faceted three-dimensional structure to re-deconstruct the soul of BIG BANG and the iconic barrel case, each iteration is a visual revolution in the watch.
The design soul of the Big Bang tattoo watch comes from the harmonious proportions and golden section aesthetics that Sang Bleu founder Maxime Bucci drew from Leonardo da Vinci’s famous painting “Vitruvian Man”. Through the cross-border integration of watchmaking craftsmanship and tattooing techniques, Hublot injects perfection into the engraved lines on the case and disk. Each generation of tattoos, no matter what material the case, dial or even the hands are made of, has gone through multiple processes such as polishing, satin, slicing, engraving, chamfering, and faceting. Geometric elements such as hexagons, rhombuses, and triangles are superimposed layer by layer, and finally create a three-dimensional visual effect with sharp edges and corners like architecture and sculpture. This creative concept of using precision machinery as the canvas and geometric lines as the brushstrokes also allows the tattoo watch to present a strong and vigorous aesthetic tension between the flow of light and shadow, making it a unique wrist art.
HUBLOT Hublot brand ambassador Maxime Plescia-Buchi wears the new Big Bang Soul Sang Bleu tattooed king gold watch
In fact, when most of the cross-border cooperation between watch brands today is only to “cover the LOGO”, Hublot can always accurately capture the characteristics and deep core of each other when engaging in cross-border cooperation. Hublot knows that the true meaning of in-depth cooperation with various fields is to bring together the essence of their respective fields. , while respecting and promoting the core values of both parties’ concepts, whether it is the golden ratio philosophy of lines in tattoo art, or creative genes in other different fields, Hublot is truly capable of transforming these whimsical ideas into watchmaking art, making each joint watch a statement of personality that breaks traditional boundaries.
Summarize:I have seen comments from watch friends before, saying that the success of the Big Bang series is firstly due to having a name that is loud and unforgettable after hearing it once. Then, in the two decades after its birth, Big Bang has not only become one of the most influential watches in the 21st century with its true strength, but also completely broke the barriers between tradition and modernity, technology and art with a pioneering attitude. It has redefined the infinite possibilities of watches through disruptive innovations in materials, functions and aesthetics.
When we interviewed Mr. Ricardo Guadalupe, the former CEO of Hublot, at Watch House two years ago, we asked a question. If we wanted to recommend a Hublot watch to watch friends at Watch House, which one would be the most suitable? After listening to our questions, he directly showed the Big Bang Unico watch on his hand and said: “I would recommend the Big Bang series because it represents Hublot.”
As Mr. Guadalupe said, the Big Bang series is an important epitome of Hublot’s development since the millennium. There are countless wonderful works created by the brand around this series. However, due to space limitations, the article can only present the most representative Big Bang watches. If you have other Big Bang series watches that you want to know about, you can also leave a message in the comment area. We will introduce it in depth with more detailed content when we have the opportunity.