Professional Cordless Phone Headphone Microphone HSM-269J2.5vcmute

Specifications

Professional Cordless Phone Headphone Microphone with Speaker Volume Control and Microphone Mute Function HSM-269J2.5vcmute:

1.Flexible high quality noise canceling microphone to reduce background noise
2.Acoustic Shock Protection circuit
3.Lightweight, durable and comfortable for all day use
4.Hearing on both sides, Microphone can be on either side 
5.Adjustable headband
6.Replaceable soft foam or soft leatherette ear pad
7.In Line Speaker Volume Control and Microphone Mute

Driver Unit                        2×30mm
Frequency Response    20-20kHz
Impedance                      32 or 150  ohm
Sensitivity                         125dB
Max input power              10mW
Plug                                2.5mm
Cord Length                    1.5m