The MRXRC is a durable waterproof remote control for the DS18 MRX1. This remote control can be mounted anywhere you need to control the master unit from a distance. The most common area would be on the rear transom or deck of a boat so you can control volume, tracks, and music sources from a more convenient and relaxed area. Built in LEDs will help you navigate easily through all your options to get to the music you love. FeaturesWaterproofEasily mountableLed lights to help you navigateMounting Diameter 1.77 inchesOverall diameter 2.43 inchesMade for 12v electrical systemsWiring harness included