... 2,in-ear stereo mp4 earphones 3,Universal 3.5mm plug mp4 earphone OEM&ODM Universal 3.5mm in-ear stereo mp4 earphones ... Features: Plug size: standard 3.5mm Plug type: L-shape Universal 3.5mm plug, great for laptop, CD player, iPod, iPhone, Mp3, Mp4 ... , 5mWRated Input Power:6mWDriver Unit:10mmRegeneration Frequency:20Hz ~ 20,000HzPlug:3.5 mm stereo mini-plugCable Length:1.2mColor:as shown ...