Features: 1.Have light allow you to tell time in the dark. 2.Suitable for outdoor / indoor activities or daily sports such as running, climbing, dancing, performance, travel, meeting, business, dating, party, birthday, graduation ceremony, ideals gifts. 3.Precisely time running and easy to read the time, easy to adjust the strap length and feel comfortable to wear on wrist. 4.Date function gives you day of the week and day of the month. 5.Wear this watch on the go, from leisure to indoor and outdoor activities or for daily use. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Description: Surface diameter: 37mm Dial thickness: 11mm Strap material: silicone