T75 Ear Mounted Bluetooth Headset (C-5304).

Specifications:
Bluetooth version：5.3
Support protocol：A2DP/HFP/SPP/HID/PBAP
Bluetooth range：10-15m
Battery capacity：50mA
Charging box battery capacity：400mAh
Charging time：About 1 h
Call&playing time：About 5 h
Speaker size：10mm
MIC Sensitivity: -42dB±3dB
Frequency response：40Hz-20KHz
Impedance：32Ω
Sensitivity：106±3dB
Charging specification：5V/1A
Operating voltage：3.7V-4.2V

Packaging what’s in the box:
2 * Wireless Bluetooth Earphone
1 * Charging box
1 * type-c charging cable
1 * User manual