Main Technical Parameters Master Chip: RLC8762 Sensor: BST-BMA253 PPG chip: Everlight Electronics Virbation: Loundspeaker Mute/Vibration Waterproof level: IP67 Compatible System: Android 4.4 agus os a chionn,iOS 8.2 and above Special Features: Brú fola, Heart Rate Screen: TFT 0.96 Scáileán datha 80*160 Bluetooth: 4.0BLE(Low power) Battery Type: Polymeter Lithium Battery Battery Capcaity: 90mAh Charging Type: Clasp type Charging Time: Faoi 2 hours Endurance …