Product information:

Bluetooth version: version 5.2
Bluetooth distance: about 10 meters
Headphone battery: 300MAH
Rechargeable battery: 2200MAH
Listening to songs, talk time: about 68 hours
Charging time: about 2 hours
Universal for left and right ears, rotatable
Battery type lithium polymer battery
Support protocol HEP\HSP\A2D\AVRCP
Process material: ABS+plating+food silicone ear caps
Frequency: 20Hz-20KHz
Impedance is 32 ohms Sensitivity 85dB/mW

Packing list:

Charging cable + pair of earphones + ear caps*1