?What's In The Box & Service?: HMS-6005 speakers*4, amplifier box *2, 3A12V adapter *2, DC12V wires x *2,speakers wires x *4, screws x *16, Product Manual *1. All of our products have passed strictly quality control before we delivery for you,STUDIOFINIX store provide one year warranty and premium customers service ,and 24-Hour After-Sales Q&A. ?240W Max Power?: The marine speakers have a full range stereo sound reproduction for a complete speaker system. The max power is 240 Watt .That can be easily installed on boat marine watercraft UTV ATV and other vehicles.Cut-out diameter: 5.31", mounting depth: 2.48". ?Marine Waterproof Rating?: IP66 marine grade waterproof speaker that can withstand heavy water splashes and also used for boats, marine watercraft, camper, RV, hot tub, bathroom, living room, a variety of outdoor off-road vehicles. ?Bluetooth 5.0?: Built with a 5.0 Bluetooth wireless streaming receiver.Can doubles as a sound-processing digital amplifier.Independent Digital Amplifier box can connect to all your favorite devices (such as smartphones, tablets and computers) , the coverage compatible with bluetooth can reach 33ft. ?Superior Sound Quality?: Our marine speakers have built-in high definition digital stereo effects and impressive enough bass effects. Each speaker can reach a maximum power of 60w. You will be able to stream audio from all of your favorite smart devices and enjoy the clear, pure, high-quality syllables.