Ovleng S13 Sports Bluetooth Earphone

Technical parameters
1. Distance:<=10m
2. Battery volume:140mAh
3. Loud speaker size: diameter 10mm
4. Charging voltage:DC5V
5. Speaker impedance:32ohm
6. Working time: music 6-8h call 8-10h
7. Version: V5.0
8. Rated power:20mWx2
9. Working voltage:DC3.7V
10. Frequency response:20-20KHz
11. Built in Microphone