This watch was designed to remind you of your engineering masterpiece, every day, every hour, every minute! The case and strap are made of steel that has been deep surface hardened and then given a scratch-resistant finish, which creates a beautiful lustrous metallic color. 3D three-dimensional Car wheel dial design,this is very special with different colors of car calipers! ! ! All of this is offset by the vivid caliper that evokes an imposing majesty to the watch and creates a sense of power. the lens is hard and the display is clear , Movement: Japanese imported quartz analog movement and battery, provide precise time and long-term running. The battery of watch can be used for more than 2 years. ⌚Material: The strap is made of 316stainless steel, Dial Window Material Type: Hardlex ,316 Stainless steel case, Suit for all kinds of occasions. ⌚3ATM waterproof: This watch is waterproof 30m, can withstand daily splash or short immersion in water, but not diving or snorkeling