ST-1806 specification
BLE: nRF 51822
HRM: VC95
Battery: 105mAh Rechareable Li-Polymer Battery
Screen Size: 0.96 inch/Colour
Stand-by Time: Up to 7 days
Net Weight: 25g
Band Material Thermoplastic Polyurethanes
IPX5 Waterproof
System Requirements:
Bluetooth 4.0 enabled
iOS 9 or above; Android 4.4 or above