Speaker

* Dynamic

* Impedance: 16ohms +/- 2 ohms

* Output: 100dB +/- 4dB

* Rated Input: 20mW (Max 30mW)

Microphone

* Low Impedance

* Sensitivity: -60.5dB +/- 4dB

* Working Voltage: 4.5V (max 10V)