View larger GENERAL FEATURES 1. Front AUX (Auxiliary) In - This input in the front of the 618UA that says “AUX” is an interface that allows the input of audio signals for MP3 players, headphones and portable music players. It is for AUDIO ONLY and not video. 2. Output Power: 50 Watts x 4 Channels - The 618UA offers 4 channels that can be used to hook up 4 speakers. Typically though, it is a much better practice to have an amplifier running your system. 3. Switchable US & Europe Tuner Frequencies - The 618UA will not only be able to pick up U. S. frequencies but it will also have the capability to pick up European frequencies. 4. Playback – MP3 5. Inputs and Outputs – RCA Outputs. View larger Compatible With Audio Output of iPod / iPhone, Smartphones and MP3 Players You can connect a device that has an Auxiliary output, such as your iPhone/iPod, smartphone and MP3 players straight into the Auxiliary input of your head unit. So basically a cable that has (2) 3.5mm audio (male) plugs. Important: Please beware that this feature is not the same as the “Full iPod Control”. This feature will only allow you to control your music by clicking on the designated buttons via the face or front side of your unit. View larger SD Memory Card Port Once the faceplate is removed you are able to insert an SD card with all of your favorite music in it. View larger Detachable Faceplate The face plate detaches and you can carry it with you for safety and security. Remote Control View larger USB Port View larger