Specs:
USB Socket A accepting any USB stick/drive
Direct stereo connection. CD sound
Full control from car stereo or steering wheel
Supports FAT16/32
Additional port for AUX-IN or iPod
Bluetooth capable
2GB USB Drive FREE
Rover LandRover RangeRover 99-05 supported
Alpine stereo supported

Specs:
3.5MM male fits any MP3 player, Smartphone
Additional USB 5V Charging
Factory harness connects to the stereo
Best sound possible. Not FM transmitter !
Bluetooth capable
Handsfree and wireless playback via GROM Bluetooth (Bluetooth sold separately)
Samsung Galaxy S and S II play and charge (cable sold separately)
Rover, Landrover with Alpine stereo supported
For connection behind the stereo!