Wireless version 3.0
Working distance: 10 meters
Earphone battery capacity 20mAh *2
Charging Compartment battery capacity: 200mAh
Rated input: 5v/20mAh (for earphone), 5v 200mAh (for charging compartment)
Charging time about: 1-1.5 hours:
Listening time: 3 hours....