Pyle Marine Bluetooth Water Resistant Amplifier Receiver marine Bluetooth amplifier receiver water resistant amp MP3/USB/aux features: sound system amp receiver for audio control Built-in Bluetooth receiver for wireless streaming water resistant marine grade construction Universal standard size for dashboard/console panel installation USB flash drive reader MP3 digital audio file playback connect & stream audio from external devices aux RCA (L/R) Input connectors - RCA (L/R) audio Output connectors includes wireless remote control used with boat, automobile, off-road, mobile and marine vehicles Max power Output: 4 x 50 Watt.