SPEAKER Loudhailer diameter : 50 mm Sensitivity : 100 3 dB at 1 kHz Frequency response : 20 ~ 20,000 Hz Impedance : 22 at 1 kHz Max output power : 10 mW
MICROPHONE Dimension : 4.0 * 1.5 mm Sensitivity : -24 3 dB at 1 kHz Frequency response : 50 ~ 10,000 Hz Impedance ""' ' 2.2 K at 1 kHz Directivity : omnidirectional