QKZ DM9 Headphones with Mic In-Ear Earbud Earphone Piston Headset Basic Version Stereo Headset for Smartphones. Earphone QKZ DM9 HiFi Ear Phone Metallic Earbuds Stereo BASS Metal in-Ear Earphone Noise Cancelling Headsets DJ In Ear Earphones. Quality optimization of exclusive patent, metal composite vibrating membrane. The ergonomic design, nipple grade silicone ear muffs. Ear and tail pipe connection with oblique angle design, comfortable and easy to wear. It has high quality sound, enjoy your life. A perfect gift for yourself or friend.
Specifications:· Type: Piston In-Ear Headphones· Function: Play / Pause, Answer / Off, Noise Cancelling, Microphone · Material: Metal CNC Zinc alloy· Weight: 15g· Speaker: 9.2 mm NdFeB speaker· Speaker Power: Rated input power: 3mW, Maximum input power: 5mW· Impedance: 16Ω±15%· Speaker Sensitivity: 94±2dB (at 1KHz 1mW)· Speaker Frequency Response: 20-22K Hz· Microphone Sensitivity: -42dB±3dB1kHz, 3V 0dB=1V/pa· Operation Temperature: -10 Celsius — +40 Celsius