Bluetooth Version: 5.0

Earphone type: Earbuds

Driver diameter: 13mm

Transmission Distance: 10m/33ft (360°)

Speaker Sensitivity: 115dB ± 3dB

Frequency range: 20Hz-20KHz

Speaker Impedance: 32Ω±15%

Mic sensitivity: -42±3dB

Charging Bin Capacity: 400mAh

Earphone Capacity: 40mAH

WorkTime: about 3-5 hours

Standby Time: about 120 hours

Charging Time: about 2 hours

Working Time: about 5 hours （at 70% Volume)

Package Included:  2*Earphones , 1*charging Box ,

1*usb charging cable, 1 manual