New product from factory N: Super 4130 movement cosmos chronograph Daytona series carbon fiber Diw customized version watch has a diameter of 40MM, which is the same size as ordinary Daytona.?The whole case is made of carbon fiber, and the carbon brazing material is a new type of material. The color is timeless black. The overall texture is very elegant and luxurious.?Carbon fiber is soft on the outside and rigid on the inside, lighter than metal aluminum, but stronger than steel and corrosion-resistant.?The matte black texture of the case is changeable, and each carbon fiber watch will show different lines due to different cutting methods, becoming a unique existence.?The strap is a Velcro design, the front is made of nylon, the back is made of cowhide, and the buckle is also made of carbon fiber.