Specifications:Type: Piston In-Ear HeadphonesTechnical Specification1. Material: PC+ABS2. Weight: 15g3. Speaker: 9.2 mm NdFeB speaker4. Speaker Power: Rated input power: 3mW, Maximum input power: 5mW5. Impedance: 16Ω±15%6. Speaker Sensitivity: 96±3dB (at 1KHz 1mW)7. Speaker Frequency Response: 20-20K Hz8. Microphone Sensitivity: -42dB±3dB1kHz, 3V 0dB=1V/pa9. Operation Temperature: -10 Celsius --- +40 CelsiusFunction: Play / Pause, Answer / Off, Noise Cancelling, MicrophonePackage weight: Approx. 30g / 1.1ozCable length: 1.25mFeatures:Quality optimization of exclusive patent, metal composite vib-rating membrance.The ergonomic design, ni-pple 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