descriptionThis product uses a 0.86" screen, supports SMS call notification, pedometer and sleep monitoring. Features: Overall design: exquisite workmanship, unique and beautiful circular design, lightweight and portable. Smooth and sweat-proof: silk smooth and soft touch surface, extremely Comfortable grip, anti-fouling, anti-scratch. Simple operation: 0.86" display screen, simple operating system. The touch screen has perfect viewing angle, simple control, sensitive response and high sensitivity. Easy connection: BT 4.0. Android 4.4, IOS7.0 and above APP. Main functions: Heart rate and pedometer: record heart rate and exercise data from time to time; music control, camera control, anti-lost, SMS and call notification, alarm clock, sleep monitoring, etc. Compatibility: Suitable for iPhone 6 6S 6 Plus 6S Plus 7 Plus Samsung S6 S7 edge. Long battery life: low energy consumption, it can be used for almost a whole week when fully charged. Specifications: Color: black; material: plastic; charging/data port: dedicated USB charging port (the chip can be taken out of the strap); heart rate sensor: AGC; display: 0.86" touch screen; BT version: 4.0; battery capacity: 55mAh ; (Theoretical standby time: up to 30 days, standby time depends on actual use); product size: about 22*2*2cm/8.6* 0.78 * 0.78in; product weight is about 25g / 0.8oz; packaging size is about 10 * 10 * 3.5cm / 3.9 * 3.9 * 1.4in; the packaging weight is about 91g / 3.18oz; Note: The product color may appear slightly chromatic aberration. It is displayed on different shooting lights and monitors. It is only for general life waterproof, swimming or bathing Do not wear it, steam may damage the wristband. Heart rate monitoring is affected by many factors, such as tension, medication, etc. The wristband language is a number, which is easy to understand. When you need to charge, you can remove the chip from the bracelet. Packing list: 1*wristband; 1*user manual