Dot Recycled Plastic Earbuds
Bluetooth scheme:  6973D4
Bluetooth version: V5.3
Supported protocols: HSP, HFP, A2DP, AVRCP
Bluetooth operating frequency: 20-20000Hz
Sensitivity 92db±3db
Charging interface: port C.
Operating voltage: 3.7V
Standby time :210H
Maximum charging time: 1.5H
Maximum transmission distance 10M
Earbud battery capacity: 45mAh
Charging cabin battery capacity: 300mAh
Talk time: 8H
Music time: 7H