Speaker:
Frequency Response:20~20000Hz.
Sensitivity: 105+/-3dB.
Impedance:32(ohm)+/-15% at 1kHz.
Max Input:10mw
Microphone:
Frequency Response:50~20000Hz.
Sensitivity:-58+/-2dB F=1kHz P=1Pa
Rated:DC4.5V
Min Operation Voltage:DC1.0V

Description:
Adjustable boom microphone, and can be made to your technical description.

Character:
Super light, comfortable, easy use with convenient ear hook for both right and left ear, and provides clear sound.