stardrift Dark Visible Glowing LED in-Ear Earphone Light Up Stereo Headphone with Mic Lights Flashing Sync Music Beats Volume (blue-led-type B) Glowing LED headphone:you can light up the earphone when listen to music.Automatically shuts off after 3 minutes of no music/voice action,then it is a normal stereo headphone Cool headphone:when you light up the earphone,the light will flashing sync the beat and the volume of the music.The stronger volume and beat is,the brighter the headphone is. USB charging:the light of earphone is powered by built-in rechargeable battery instead of by your cellphone,you can charge it easily witht the usb cable come along with the earphone 3-in-1 button on the earphone:light up the earphone,answer/end phone calls,pause/play the mucis High quality clear sound,3.5mm plug compatible with all music players that have standard earphone socket.