ASK902B.6 Package with 4-Channel Bluetooth Amplifier w/Remote, 2 MR6W 6.5" White Speakers, USB/AUX Input & Waterproof Case500 Watt 4-channel Bluetooth amplifier, two pair Marine Speakers, USB cableFeatures:Weatherproof MR6W 6.5" Full Range Marine Speakers with Poly Carbon Cone and Rubber Surround180 Watts MAX 90 Watts RMS Power Handling per PairMC900B has 500 Watt Max Power4 Channel Weather Proof Amp with Multi-Function RemoteAux, Low Level Inputs, RCA Pre-amp Outputs and USB Charging PortBluetooth Audio Streaming - play music and apps like Spotify/Pandora wirelesslyNO Head unit is Needed to Play your MusicIncludes Flush Mount Bezel for Remote, Mounting Bracket, 10 ft. USB Cable and Protective Phone PouchAudio StreamingAudio streaming [A2DP] is an audio protocol of Bluetooth technology. This profile allows for audio to be streamed wirelessly from your compatible device, such as a Smartphone, to the source unit so you can enjoy your favorite music or streaming music service such as Pandora or Spotify, wirelessly.Aux InputThe Aux Input allows you to connect to the audio output of an external device such as an MP3 Player or Smartphone so you can enjoy your music through your system.Fully MarinizedFully Marinized is the term we use for our Marine and Outdoor products that are Weather Proof. We integrate high-tech, state-of-the-art waterproofing materials plus special UV coatings for plastic surfaces, coated circuit boards and connections to protect the product against the harsh outdoor elements and resist corrosion.Multi-Function Remote ControlIn-line Remote Control that can be installed in a convenient, safe place to allow you to control the volume, track and other functions of your system while riding.USB ChargingBuilt-in 1A charger allows you to charge your USB connected device thru this units USB port.