1. Speaker 10mm dynamic type.
2. Impedance 32Ohms.
3. Sensitivity 110dB.
4. Frequency range 20~20KHz.
5. Max input power 5mW.
6. Port 3.5/3+2 pole stereo port.
7. Cable length 1.25M.
Microphone: 1. Sensitivity -56dB.
2. Impedance 2.2KOhms.
3. Work voltage 3.0V.