1. Driver: 15mm
2. Impedance: 32 OHM
3. Bluetooth version: Bluetooth v4.1 + EDR
7. Bluetooth distance: 10 meters barrier
8. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol
9. Powerful noise de-noising circuit (active noise reduction)
10. switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times, hear the tone switch successfully)
11. Charging time about 1 hour (power indicator charging: red light, full power: red light off (blue light).)
12. Product Size: Length 25MM. Width 15MM. High 35mm
13. Talk time is about 4-5 hours
14. music time about 4-5 hours
15. Standby time is about 120 hour
19. The charging time is about 60 minutes
20. Battery capacity 60MAH