1. Bluetooth version: Bluetooth 4.0
2. Compatible system: IOS 8.0 and above, Android 5.0 and above
3. Control: touch control
4. Main functions: blood pressure monitoring, heart rate monitoring, step counting, calorie consumption, distance, number of steps, automatic sleep monitoring, call vibration reminder (caller number/name display), information display, alarm clock reminder, mobile phone anti-lost, remote camera, etc.
5. Screen size: 0.69" OLED
6. Battery capacity: 40mAh polymer lithium battery
7. Waterproof rating: IP67 (waterproof, sweatproof, rainproof, splashproof)