FEATURES - Bluetooth handsFree & Wireless Audio Player. - FM music transmitter function. - Play back USB disk / SD card music. - Built in 2.1 A smart charging USB. - COMPATIBLE WITH ANY DEVICE iPod, iPhone, iPad Air/Mini, Samsung, Galaxy, HTC, Sony, Motorala, AND WITH ANY Smartphones! TECHNICAL SPECS - Product Input: 12-24v - Charger Output: 5V/2.1A - Music Format: MP3, WMA - USB/SD Card Max Capacity: 32GB - Transmit Distance: About 10m - Product Size: 7.5 x 3.3 x 10cm - Package Contents: Bluetooth, Audio Cable, Remote Control, User Manual.