Wireless noise reduction foldable headphones

1. Package size: 218*198*53mm
2. Bluetooth version :4.2
3. Scope of work :10 meters
4. Bare machine size: 200*165*47mm
5. Rated power: 150 mW
6. Frequency: 80 hz - 20 KHZ
7. Talk time: 10 hours
8. Distortion: ≤0.5%
Battery capacity: 300 MAH
9. Charging voltage :5V±0.5V
10. Charging time: 3 hours
11. Playing time :10 hours
Standby time: 300 hours