Speaker Unit: Φ40mm

Magnet: Neodymium

Sensitivity: 110+/-3dB

Impedance:32 ohms+/-10%

Frequency range:20~20KHz

Active cancellation: 20~25dB 

Power: 3.7V  360mah

Blue-tooth version:ACT3009   V5.0

operation distance:10m

Continuous working time:12 hours