901 headset

Ear shell: ABS microphone head: Φ 6.0 * 5.0mm
Sensitivity: 105 ± 3dB
Speaker size: 30mm
Impedance: 32 Ω
Frequency response: 20-20KHz
Wire specification: 1.5m ± 5%
Ear cotton: sponge
Plug size: 2 3.5mm
Microphone sensitivity: -42 ± 3dB