Bluetooth vision: V5.0
Play time: 4 -5hours (depend on 80% volume)
Stand-by time:80 hours
Earphonecapacity: 3.7V 35mAh
Charging box Capacity:250mAh
Charging time: 1-2H
Standard distance: 10 m
Earphone size:20*25mm
Charging box size:50*50*20mm