QKZ DM7 Zinc Alloy HiFi Stereo Bass Headset

QKZ DM7 Zinc Alloy HiFi Stereo Bass Headset, Quality optimization of an exclusive patent, metal composite vibrating membranes, Play / Pause, Answer / Off, Noise Cancelling, Microphone.

Feature

Metal CNC Zinc alloy

Weight: 20g

Speaker: 9 mm NdFeB speaker

Speaker Power: Rated input power: 3mW, Maximum input power: 5mW

Impedance: 32 5%

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