CPU: NORDIC 52832 APP name:"Hi Move" Display screen: 0.96 inches OLED (resolution ratio 64*128 Accelerated velocity: KX023 three-axis acceleration sensor Heart rate: Static and dynamic heart rate monitoring. The accuracy rate is basically synchronized with professional heart rate belt curve. Rechargable lithium-ion polymer battery: 90mAH Motor: Built-in for vibration alert Charging: 5V/500mA Waterproof degree: IP67 Life time: About 7 days after full charging. Standby time: 25 days Charging method: USB charging System requirement: Android 4.4 above, iOS 8.0 above, Bluetooth 4.0Data Sync: Bluetooth data is synchronized with smart phone APP and backend. Data storage: 7-day sport/sleep dataHints:1. The product is measured manually, there will be some errors, please refer to the actual size2. The photo was taken in natural light because there is a slight chromatic aberration between the device and the monitor, please understand
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