Product model: TW6 Time/date/vibration alarm clock can set three sets of alarm clocks (support week options) 3D pedometer can count steps all day/single time Calorie monitoring Sleep monitoring Exercise mileage Waterproof Stopwatch Raise your hand to light up the screen Rechargeable polymer lithium battery, fully for 30 days 7-day memory of exercise data Note: The above functions all support single watch replacement, no need to bind mobile phone or computer software Pedometer sensor: 3D G-sensor Pedometer accuracy: 95% Prompt method: vibration motor Display screen: LED light display Waterproof level: IPX67 Data storage: can continuously memorize of exercise data Charging voltage: DC=5V (built-in USB can be directly plugged into a power bank for charging) Battery capacity: 55mAh 3.7V Product weight: 17g Use environment: -10~50C Product size: 240X16X8mm (Length x Width x Height) Net weight: 17g (Net weight without packaging) Color: Black Material: Silicone Package Contents: 1 * Smart Bracelet 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.