Interface: 3.5mm
Wireless or Wired: Wired
Powered By: Others, Power Free
Headphone Frequency Response: 20~20000Hz
Other Features: 1) Note: This headphone does not have volume control button2) Standard 3.5 mm plug pin fits for different kinds of multimedia device, such as IPOD, mp3, mp4, PSP, mobile phone and personal computer 3) One sided design of the earphone line makes you wear and remove the headphone easily 4) Wide head beam and lightweight design makes you feel more comfortable when you use the headphone