smart Watch, Small and light, simple and fashionable,life waterproof.Design of circular area for wrist, more comfortable to wear. USB rechargeable watch, built-in rechargeable battery.Built-in 3D acceleration sensor with high sensitivity, can catch your every small action, making more accurate pedometer Feature - Color: Black. - Material: Silicone. - Size: 22 x 1.7 x 0.5 - Battery capacity: 50mAh. - Waterproof: IP65. - Super light weight and long battery time: band is only and it can last for a week. - 3D acceleration sensor with high sensitivity:capable of capturing small movements, and pedomenter is more accurate. - All-Day Activity: Understand your every move,Monitor walking distance and calories burned,stationary time. - Time/Date:Touch the button to show time and date, Datetime format :time/date. - Easy Charging:Don't charging Cable, just directly inserted activity into the computer or mobile power adapter.(Please confirm that you plug into the correct direction,otherwise it won't charge). Package list: 1 x Smart Wristband