Chip: AD6973 Wireless: V5.3
Working range: 10m
Earphone battery capacity: 30mAh*2
Charging time: 1.2-1.5h
Use time: 5-6 hours
Use with the charging bin time:25 hours
Battery box capacity: 300mAh
Battery box charging time: 1.5h
ENC call noise reduction
Material:ABS