TheElves Wireless Radio FM Transmitter Bluetooth Car Kit with Dual USB Charging Port and Handsfree Calling & Stereo Music Playing Function(Black) 4 Core functions:FM transmitter,handsfree, bluetooth MP3 play,dual USB charging ports. Voice quanlity:Crystal clear and nature voice based on noise suppression (CVC) technology, A2DP function, makes music transmitted from phone to your car audio via FM so that you can enjoy music with higher quality. Active pairing:Easy and fast pairing with your bluetooth device.Can connect two phones at the same time. Convinience:Two-Port Car Charger charges two mobile devices at the same time.Suit for iPad (max speed), iPhone (max speed), iPod, HTC, Galaxy, Blackberry, MP3 Players, Digital Cameras, PDAs, Mobile Phones. TheElves offers a limited 1-year manufacturer's warranty for all our products, and is committed to ensure that you are satisfied with your shopping experience. TheElves Warranty is only available when you purchase product from TheElves,If you purchase product from any other seller,you are purchasing the product without a warranty.