Main Technical Parameters Master Chip: RLC8762 Sensor: BST-BMA253 PPG chip: Everlight Electronics Virbation: Loundspeaker Mute/Vibration Waterproof level: IP67 Compatible System: androide 4.4 e al di sopra,iOS 8.2 and above Special Features: Pressione sanguigna, Heart Rate Screen: TFT 0.96 Schermo a colori 80*160 Bluetooth: 4.0BLE(Low power) Battery Type: Polymeter Lithium Battery Battery Capcaity: 90mAh Charging Type: Clasp type Charging Time: Di 2 hours Endurance …