Product Specifications:
     ● motorcycle helmet headphones
     ● With finger PTT key function
Technical Parameters:
     ● Speaker
     ● Impedance: 32ohm
     ● Frequency range: 20-20KHz
     ● Sensitivity: 110dB ± 3dB
     ● Maximum output power: 50mW
     ● Microphone
     ● Impedance: 2.2Kohm ± 30%
     ● Frequency range: 20-16000Hz
     ● Sensitivity: -58dB ± 2 dB (0 dB = 1V / Pa, 1KHz)