LED Electronic Digital WristwatchMethod of use: Display: light to display the time, press again to display the date, then press the display seconds; Adjustment: long press for a few seconds, light flashes, then add hours, hours after a good tune long press for a few seconds, and then press the increase in minutes, this method in order to adjust the time, year, month, day.Specification: Item Type: LED Electronic Digital Wristwatches Gender: Men/Women Style: Fashion & Casual Movement: LED Electronic Digital Water Resistance Depth: No waterproof Dial Diameter: Men: 20MM*50MM Dial Window Material Type: Glass Case Shape: Irregular Shape Case Material: Silicone Case Thickness: 12MM Strap Material Type: Silicone Band Width: Men: 17MM Band Length: 250MM Color: As picture shown