TWS true wireless bluetooth headset

Bluetooth version: 5.0
Bluetooth distance: 10 meters
Charging box power capacity: 300mAh
Charging box: can be charged more than 2-3 times
Headphone battery: 40mAh
Headphone continuous playback time: 5 hours
Standby time: about 15 days
Charging time: earphone charging for 1 hour
Charging time of charging box 18 hours
Charging box power input voltage: 5V
Receiving sensitivity: 105DB+3DB
Speaker specifications: 8mm
Transmission frequency: 20hz- 20Khz
Headphone size: 22.2*16.3*21mm
Charging box size: 66.5*28.6 29.3mm