Type: active noise cancellation bluetooth headphone
Speaker Unit: Φ40mm
Magnet: Neodymium
Sensitivity: 110+/-3dB
Impedance: 32 ohms+/-10%
Frequency range: 20~20KHz
Active cancellation: 20~25dB
Power: 3.7V 750mah
Blue-tooth chip: ATS3015
Blue-tooth version: V5.3
Operation distance: 10m
Continuous working time: 12 hours