Item Type: Electronic watch Material: Stainless steel, plastic, mineral reinforced glass mirror, environmental protection resin Shell Diameter: Approx. 55mm / 2.2in Strap Width: Approx. 23mm / 0.9in Strap Length: Approx. 240mm / 9.4in Shell Thickness: Approx. 17mm / 0.7in Battery Type: Button cell (shipped with battery) Package List 1 x Watch 1LUMINOUS DESIGN: This watch uses a luminous mode to display the time clearly even at night, making it easy to check the time in the dark. 2SUITABLE FOR: This dual display watch is especially suitable for people who like sports style, multi functional, suitable for various sports scenes and daily use. 3WATERPROOF: This luminous watch is designed to be waterproof so you can wear it when you get wet in the rain, shower or wash your hands, and you don't have to worry about soaking it with sweat when you exercise. 4WEARING COMFORT: The strap is made of environmentally friendly resin, good flexibility, more comfortable to wear skin friendly, the case is odorless, comfortable to wear, smooth and textured. 5BEST GIFT: You can give this electronic watch as a gift to your friends, lover, family, kids on Christmas, Easter, birthday, Valentine's Day.