Boss Audio ASK904B.64 Bluetooth Amplifier w/ 4 SpeakersThe Boss Audio ASK904B.64 is a audio package that includes a 4-channel amplifier, four marine speakers, a universal USB cable, and a phone pouch. This amplifier features Bluetooth Audio, allowing you to enjoy your favorite music or streaming service wirelessly. Both the amplifier and speakers are manufactured to be fully marinized. Utilizing high-tech waterproofing materials and special UV coatings, these electronics are built to withstand harsh marine environments. An in-line remote control is included and can be installed in a convenient, safe place to allow you to control the volume, track, and other functions of your system while underway.Features: Includes two pairs of weather-proof 6.5" speakers with poly carbon cone and rubber surround; 4-Channel amp with Bluetooth multi-function remote - no head unit needed; Compatible with audio out from smartphones and MP3 players; Aux, low level inputs, RCA pre-amp outputs and USB; Bluetooth audio streaming - play music and apps wirelessly; Specifications: Speakers - 180 Watts MAX 90 Watts RMS power handling per pair; Amp - 500 Watt Max Power; Dimensions: 3.79" W x 7.79" L x 1.75" H;