Speaker Unit: Φ40mm

Sensitivity: 110+/-3dB                               

SNB>=85db

Impedance:32 ohms+/-10%

Frequency range:15~20KHz

Active cancellation: 22dB 

Power: 3.7V  300mah                             

Charging Time:2 Hours

Blue-tooth version:V5.0

operation distance:10m

Playing time:6 hours