MGR250B RemoteThis four-channel remote is the perfect option to control most BOSS Audio Systems. Features:4-channelCutout diameter: 3" (76 MM)Zero current draws memoryIlluminated soft-touch buttonsConformal-coated PCB60 watts x 4 channelIPX6-rated (weather-resistant/ dustproof)Inputs & Outputs:USB portUSB charging (2A)*Aux-InCompatible with audio output from iPhones, smartphones, and MP3 playersPre-amp outputs (1 pair)Playback:MP3/WMABluetooth® audio streaming stream and control your favorite music appsDimensions:Unit (L" x W" x H"): 3.5 x 3.78 x 3.78 in.Unit Weight (lbs.): 0.66Shipping Weight: 1.066