Universal Stereo Headset Bluetooth Earphone Headphone Mini V4.1 Wireless Bluetooth Headset Handfree Free Shipping

Features: 

1. Charging voltage: DC5V 150mAh
2. Working current: 25-35mA
3. Bluetooth A2DP Working range: 10m 
4. Output power: 35mW
5. Working Time: Music/ HuaTong state 4-6 hours (The Volume will affect the time)

6. Charging Time: 1h-2h
7. Talk time: 4-6 hours， play time: 4-6 hours
8. Music Playing Time: up to 4 hours
9. Frequency Response: 20 ~ 20000Hz
10. Bluetooth Version: V4.1

11. Support English Voice .

12. Steady wear for ear ， hard to fall down ， support doing sports.