BY-21

Specifications :

Display: 0.96 inch HD Display
Main Chip: nRF51822 258kB Flash Memory 32kB RAM
BT: 4.0BLE(Low power consumption)
Blood Pressure Monitoring: 90% of user deviation can be controlled within +-12
Sync: Android & iOS
Waterproof: IP67/Life waterproof(Customized waterproof level according to the shell material)
Battery type: Polymer lithium battery
Battery capacitance: 75 mAh
Use time: 5-7 days.
Standby time: 20 days
Charging type: USB charging
Size: 252*19*10mm

Function:
Date & Time / Step / Distance / Calories / Multiple sport monitor / Heart Rate  monitor/ Auto heart rate monitor /
heart rate alarm / Blood pressure monitor / Auto Blood pressure monitor / Blood oxygen / Fatigue  monitor  /
Sleep monitor / Bluetooth remote to take photoc  / Message Reminder / Call Reminder / Alarm reminder /
Sedentary  Alarm / Anti-lost  ...etc