The Lanzar OPTIAT94A Opti-Drive Bluetooth Weatherproof Speaker System gives your vehicle versatile sound power on the go. Mount the dual 3" marine grade construction speakers to your handlebars and cruise around with style. The bullet-designed speakers can mount to a motorcycle, ATV, snowmobile or WaveRunner - to provide mobile audio on the move. The system includes (2) 400 watt weatherproof speakers, built-in micro amplifier and all the necessary mounting hardware and cables to get connected. Built-in Bluetooth technology allows instant wireless music streaming ability. It works with all of your favorite devices and setup is easy. Now you can enjoy mobile music on the go with the Lanzar Opti-Drive Bluetooth Weatherproof Speaker System.