Headphone section:
Speaker: Φ15mm
Sensitivity: 102dB S.P.L at 1KHz
Impedance: 32Ω
Frequency response: 20Hz-20,000Hz
Rated power: 5mW
Power capability: 50mW
Cable Length: Approx.2.4±0.15m
Plug type: Φ3.5mm stereo

Microphone section:
Microphone unit: 6*5mm Dia. electre condenser
Microphone directivity: Omni direction
Sensitivity: -58+/-2dB
Impedance: Low
Frequency response: 30Hz-16,000Hz
Standard operation voltage: 3V