Why Bronze? When you first get the bronze watch, it is slightly rose gold in color. When you wear it for a month or more, the case will gradually darken and become very retro (I prefer this). Of course, the depth of the case color and the oxidation time vary according to each person's wearing habits. Interestingly, if you don't like the color of the oxidized case, you can remove the watch strap and soak the watch head in Coke or ketchup for a few minutes and it will return to its original color. This process was actually tried by our team, and it was very interesting! CuSn8 Bronze Case CuSn8 refers to tin bronze and is commonly used on high-end watches.It is 20 times harder than regular bronze, and its oxidized color will be more beautiful; This material will show different oxidation effects according to the wearer's different ways of using it. This is also the reason why bronze watches are so popular. Original SeaTurtle Shell Textured Dial Design with Super Luminous Inspired by seaturtles, the dial features a luminous turtle shell texture.Perform More Stunning at Nighttime.（Luminescent display of the green dial and black dial.） The luminescent effect of the red dial. The bezel is constructed from copper, matching the material of the case. The black and green dials, on the other hand, incorporate a ceramic bezel. Sapphire Crystal 2.5mm sapphire crystal mirror surface, sapphire measures 9 on mohs scale, and second only in hardness to diamond.The mirror can withstand a lifetime of use and remain looking exceptional.Combining a bronze case with a sapphire mirror creates a tough watch that is rust-proof, scratch-proof, and impact-proof. Unique Caseback & Japanese Automatic Movt Japanese automatic - Miyota 8215 intergrated by 21 jewels. With a power reserve of 42 hours and a movement frequency of 21600 times/hour，which make it not need battery to achieve a long-lasting and stable performance. Genuine Leather Strap Hand selected high quality cow leather with stainless steel Buckle.The First layer cowhide with water resistant lining is breathable,soft,provides you with a more comfortable wearing experience.