Model:W19
Bluetooth Chip: JL6983D4
Bluetooth Version:V5.1
Transmission Distance:10m
Working Frequency:2.402-2.480GHz
Battery Capacity:30mAh
Charging Box Capacity:220mAh
Charging Box Capacity Time:About 1-2H
Call Time:About 3H
Standby Time:About 30H
Input voltage:DC 5V