Specifications:The smart bracelet supports bluetooth-compatible function, which can be connected to your phone.It has functions of pedometer, sleep monitor, heart rate monitor, fitness tracker, etc.It supports multiple languages and smart touch operation, which is convenient to use.Item Name: Smart BraceletMaterial: ABS, PCBluetooth Version: 4.2 or Higher VersionResolution: 240 x 240 PixelsBattery Capacity: 260mAh (Included)Features: Rechargeable, Fitness Tracker, Smart TouchThickness: 12mm/0.47" (Approx.)Width: 20mm/0.79" (Approx.)Screen Size: 1.54"Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Smart Bracelet1 x User Manual