BOSS Audio MC520B Bluetooth, Weatherproof Speaker And Amplifier Sound System, Two 3 Inch Speakers, Bluetooth Amplifier, Multi-Function Remote Control, Ideal For Motorcycles/ATV and 12 Volt Weatherproof, 3" chrome speakers (pair), 2 ch Compact amplifier USB and SD ports, FM tuner, 3.5mm aux input Remote control (RF), adjustable brackets