Technic Parameter：

Driver Unit: Φ9mm
Impedance: 16ohms
Sensitivity: 104±2dB S.P.L. at 1KHz
Frequency Response: 20Hz-20,000Hz
Max. Input Power: 10mW
Cord Length: 1250±50mm
Plug Type: 3.5mm Stereo Gold-plated

Product  Features：

High quality stereo sound
Holds firmly to your ears and filters outside noise,
Enjoy your music with Bong effect and very Safe to use.
Input 3.5mm/2.5mm Stereo Plug
RoHS and customer logo compliant
Perfect use for iPod, MP3 and MP4