1. Version: 5.3
2. DISTANCE: 10 M
3. Horn Size: 13 mm
4. Frequency range: 2.402-2.480 Ghz
5. IMPEDANCE:32Ω
6. Headphone battery capacity: 25MAH * 2
7. Charging Bay battery capacity:220 MAH
8. Working Hours: about 4hours (headphones)
9. with charging Bay: about 20 hours
9. Charging time: The 1 hour charging bin can charge the earphone 4 times