Chrome 600 Watt Motorcycle Atv Boat Amplifier with Bluetooth , 2 Remotes , Marine External Antenna. Great for All Motorcycle Full Bluetooth functionality (no need to connect your phone or player with messy wires) External jack with marine grade antenna that allows crystal clear FM reception Stronger FM Tuner Wired and wireless full function remote (wired remote has bracket and illuminnus buttons) Bluetooth Built in external antenna jack with marine grade antenna USB& SD Slot input, 3.5mm AUX input Big Size LCD Screen to show song FM frequency, USB, SD input etc. FM radio full function WIRED REMOTE / WIRELESS control Power and MUTE switches 2 Stereo Channels. External antenna for clear FM