Watch Multifunction Waterproof Touch Screen Smart Watch for ideapro i8Note: 1. Please kindly allow 2-3% difference according to manual measurement.2. Please note that slight color difference should be acceptable due to the light and screen. Thanks!Specifications: Shell Material: Aluminum Alloy Watch Band Material: Silicone Color: Random Color(Black/Golden/Pink) Product Size: 255mm38mm10.9mm/10.04inches1.5inches0.43inch Product Weight: 36g/0.08lb Package Weight: 140g/0.31lb Package Size: 152mm97mm28mm/5.98inches3.82inches1.1inches(LWH) Model: For ideapro i8 CPU: NRF52832 G-sensor Model: SC7A20 Heartrate Sensor Model: VC31 Water Resistant: IP67 Waterproof Screen Size: 4.3cm/1.7inches Screen Type: IPS Color Touch Screen Resolution: 240*280 Button Method: Side Button + Full touch Bluetooth: Bluetooth 5.0 Compatible OS: For Android & iOS Compatibility: For Android 4.4 / iOS 8.2 and Above System APP: Qwatch Sensor: Heart-rate sensor, Proximity sensor, Accelerometer Type of Battery: Lithium polymer batteryBattery Capacity: 230mAh Charging Head Specifications: 1A or below 1A Charging Voltage: 5.0V Charging Current: 180mA Charging Method: Magnetic Charging Standby Time: 30 Days (standby mode); 10 Days (daily use mode) Charging Time: About 1.5 Hours Alert Type: VibrationPackage Contents: 1 x Watch 1 x Cable 1 x User Manual (English, German, French, Italian, Spanish, Japanese)Promise: If the product has any quality problems, please feel free to contact us, we will help you solve the problem as quickly as possible.