Waterproof: IPX66 Water Resistant. Well Sealed to avoid Fogging/Moisture inside the screen. Hit the water and enjoy your music with the marine-grade stereo. This marine stereo radio is protected from the elements. Inputs &Outputs: The USB port gives you have a vast library of audio files. The auxiliary input is compatible with audio output from smartphones and MP3 players; Use the front/rear pre-amp outputs to hook up your speakers. Marine stereo package list 1 x Water Resistant Media Receiver;1 x Wiring Harness;2 x Installation Nuts;1 x speaker;1 x User&#######x27;s Manual. Special Feature: Waterproof, Water Resistant. Compatible Devices: MP3 Player. Connector Type: Stereo Audio. Audio Output Mode: Stereo. Number of Channels: 4. Product Dimensions: 5.51 x 5.51 x 5.52 inches. Item Weight: 1.26 pounds. Date First Available: August 18, 2021. Country of Origin: China. And we will work with you to resolve it to your satisfaction.