Zinc alloy Metal CNC
Speaker: 9 mm NdFeB speaker
Speaker Power: Rated input power: 3mW, Maximum input power: 5mW
Impedance: 32Ω±15%
Speaker Sensitivity: 120±2dB (at 1KHz 1mW)
Speaker Frequency Response: 8-22K Hz
Microphone Sensitivity: -42dB±3dB1kHz, 3V 0dB=1V/pa
Operation Temperature: -10 Celsius — +40 Celsius