MP3/WMA/made with Bluetooth™ technology Audio Streaming. Stream and Control your favorite music apps. IPX6-Rated. Illuminated Soft Touch Buttons. Switchable US & EU calibrator Frequencies. Conformak Coated PCB. fits ZERO™ Current Draw Memory (Radio Preset Memory in fits Case™ of Battery Disconnect). Cutout Diameter: 3in. (76mm). 60 Watts x 4 Channel. USB Port. USB Charging (1A). Aux-In. Compatible with Audio Output of fits iPod™/Iphone. Smartphones and MP3 players. Video Input/Front Camera Input. External Accessory Control via Aux manual switch Output (Lightbars, LED Whips, etc.).