Decription:

Speaker Diameter: Φ40mm
Speaker Impedance: 32ohm ± 15%
Speaker sensitivity: 93dB ± 3dB
Frequency response: 20-20,000 Hz
Maximum power: 50mw
Microphone Sensitivity:-58dB ± 2dB
Microphone frequency response: 30-16,000 Hz
Operating voltage: 4.5V
Cord length: 2.2 M

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