Description: Brand: JOWAY Model: HP21 Driver: 8mm Dynamic monomer Isolation: JOWAY sound system Headphone sensitivity: 8dB (1kHz \/ 1Vrms) Impedance: 16Ω Frequency response: 20-20000Hz Cable length: 1.2M Plug: 3.5mm stereo plug Microphone Sensitivity: -42dBV \/ Pa Microphone: Yes Color: black, white Features: 1. Aluminum metal sound chamber, giving you the best audio experience. 2. Use for: ipods, ipads, mp3, mp4, iphones, smartphone, PC, notebook and all devices with standard 3.5mm earphone jack. 3. Telephone correct songs, listening to music and receive calls support. 4. Adjust the song up and down, every touch time with you to the music of the times. Package Include: 1x JOWAY HP21 In-ear Earphone