Speaker size 32 × 7.6mm
Speaker sensitivity 102dB±3dB/1mW At 1000Hz
Speaker impedance 32Ω±15%/1000Hz/1.0V
Speaker max input power 30mW
Speaker frequency range Voice: 20Hz – 6800Hz Music: 20Hz – 20kHz
Microphone type Uni-Directional Microphone
Microphone frequency range 1 – 5kHz