1. Bluetooth version: Bluetooth 4.0
2. Compatible system: IOS8.0 and above, Android5.0 and above
3. Control: Button control
4. Main functions: step counting, calorie consumption, distance, number of steps, automatic sleep monitoring, call vibration reminder (caller number/name display), information display, alarm clock reminder, anti-lost mobile phone, remote camera, etc. 5. Screen size: 0.49" OLED
6. Battery capacity: 100mAh polymer lithium battery
7. Waterproof rating: IP67 (waterproof, sweatproof, rainproof, splashproof)