Watch Dial Diameter: about 35mm Watch Band Width: about 35 mm Watch Band Length: about 22cm Watch Thickness: about 0.4cm Suitable for wrist circumference:170mm-210mm(6.69 inch-8.26 inch) Water Resistance Depth: waterproof while washing hands Case Shape: Rectangle Movement: Digital Case Material: Carbon Fiber Strap buckle: Cool magnetic closure buckle Function: Date Display, Time Display, Complete Calendar Watch strap material: Tyvek Paper Built-in LED Display Screen Features: Strong, Durable, Ultra-light Style: Trend, Personality, Creativity, Environmental protection, Sports,Fashion Use Guide: Built-in LED display screen, 12-hour clocking method Press once: Display Time Press again: Display Date The third press: Display second Time/date settings: Long Press the button for 3 seconds. After the hour flashes, press to adjust the hour. When the hour is flashing, long press to adjust the minutes. Followed by the same method to set the year, month, day Note: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 1*watch