Bluetooth FM Transmitter,LEOKOR Wireless FM Modulator Radio Car Kit Mp3 Player with 2 USB Charging Port ,Support Music Control and HandsFree Calling Automatically detect the charging device and charging environment, match the optimal current, display output current value, more intelligent than others. Exquisite appearance. Automatically play and transmit the MP3 files of USB driver ,Micro SD card directly, Supports dual USB output voltage, power supply for other devices, the maximum output 5V/2.5A. Bluetooth version:2.1+EDR . Simply paired your phone with the Bluetooth FM Transmitter and its hands-free system can set free your hands during answer the calls and let you safely drive. Excellent hi-fi stereo sound quality. High-performance built-in microphone with Echo cancellation and noise suppression (CVC) technology which can offer your clear talking and wonderful music Compatible Modes: iPhone , Samsung , HTC , LG , Sony , Motorola , Nokia , ASUS , Microsoft & More Smartphones , Tablets & MP3 Players and other mobile devices.