1. Bluetooth version: 4.0
2. Battery capacity: 20mAh
3. Charging input: 5V, 20mA
4. Product material: ABS+silicone
5. Charging time: 2 hours
6. Life time: 24 hours
7. Effective range: 10 meters
8. Product size: 2 x 2 x 2.3cm
9. Product weight: about 4g
10. Product function: control APP short video page flip browsing and like functions
11. Matters needing attention: iOS system mobile phone needs to turn on Settings-Accessibility-Touch-Assistive Touch before it can be used normally