Car MP3 Player Cigarette Lighter Bluetooth Music Player Machine USB Charger Bluetooth Hands-Free Calling Off U Disk Infrared Bluetooth Stereo music play, Support TF Card/ U Disk Player, Support MP3, WMA format music Bluetooth Hands-free function: answer hang up, reject, redail calls and other functions Adjustable to any angles, and fit to all types of Vehicles Excellent sound quality with D.S.P solution for echo cancellation Echo Cancellation and moise suppression(CVC) technology during a call