Bluetooth Version: Bluetooth 5.0

Driver : 6mm dynamic driver

Frequency Response: 20-20kHz

Driver Impedance : 16Ω±15% at 1KHz 1mW

Sensitivity : 95±3dB at 1KHz 1mW

Bluetooth Distance: ≤10 meters

Battery Life : 5 hours ( single earphone )   25 hours( earphones plus charging case）

Charging Time: Earphone 1.5 hours   Charging case  2 hours

Battery Capacity : Earphone 40 mAh    Charging case  400 mAh