Earphone Diameter: 40mm
Frequency range: 20Hz-20KHz
Resistance: 32°C
Maximum power input: 30mW
Sensitivity: 113 +/- 3dB
The bottom of the wire: 2.2M
Microphone Dimension: 6.0 * 5.0
Connection mm: 3.5 mm
Microphone sensitivity: -54 +/- 3dB