Specification:
- Brand QKZ
- Model DM4
- Type Piston In-Ear Headphones
- Material Metal CNC Zinc alloy
- Speaker 9 mm NdFeB speaker
- Speaker Power Rated input power: 3mW,
- Maximum input power: 5mW
- Impedance 16Ω±15%
- Speaker Sensitivity 100±3dB (at 1KHz 1mW)
- Speaker Frequency Response 20-22K Hz
- Microphone Sensitivity -42dB±3dB1kHz, 3V 0dB=1V/pa
- Weight 20g
- Operation Temperature -10 Celsius — +40 Celsius
- Function Play / Pause, Answer / Off, Noise Cancelling, Microphone
- Package weight Approx. 30g / 1.1oz
- Cable length 1.2m
At this price range this is great. I really love it. And their delivery was super fast!