Jack:3.5/2.5MM；     L=1.4M,Rated Impedance:32Ω±10%；Frequency:18-22KHZ   Rated Power: 2mw, Max Output Power:5mw F0:200±20%HZ   Sensitivity：105±3dB(at1KHz) Pu metal earphone

Stereo earphone
The earbud made in metal material
It cam make very high quality sound
Compatible with mp3, mp4, ipod, iphone
Laptop, computer and other audio device