Wiwu Marathon MA 1 Bluetooth handsfree

Specifications:
Bluetooth Version: 5.0
Bluetooth Transmission : 10m
Transmission Frequency:  20HZ-20KHz
Playtime : Up to 6 hours
Talk time: Up to 6 hours
Battery Capacity: 150mAh
Charging Time:  2 hours
Standby Time:  7 Days