Color Black Brand Ditmo Model DM-2570 Quantity 1 Piece Material ABS Shade Of Color Black Interface 3.5mm Wireless or Wired Wired Powered By OthersPower Free Headphone Frequency Response 20~20000Hz Impedance 32±15% ohm Microphone Frequency Response No Sensitivity 94dB S.P.Lat 1KHz Sound Card No Other Features 1) Note: This headphone does not have volume control button; 2) 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 Packing List 1 x Headphone 1 x Audio Cable (1.2m)