Headset
1. Frequency response: F0-20KHz
2. Impedance: 32ohm +/- 15%
3. Speaker: 10mm
4. Interface: 3.5mm
5. Input power: 10mW
6. Cable length: about 2m
Microphone
1. Type: 9.7mm diameter, ECM unidirectional
1. Frequency response: 100Hz-10KHz
3. Sensitivity: -40dB +/- 3dB
4. Pickup: Cardioid
USB audio amplifier
1. Control function: microphone switch, volume control
2. Cable length: about 1.5m