● Speaker Unit: Φ9mm

● Magnet:Neodymium

● Sensitivity: 110+/-3dB

● Impedance:32 ohms+/-10%

● Frequency range:20~20KHz

● Active cancellation: 20~25dB 

● Headset battery capacity:40mah

● Charging bin capacity: 500mah

● Blue-tooth version:  BT8892E   V5.0

● operation distance:10m

● Continuous working time:20 hours