1. Switchable US & Europe Tuner FrequenciesIf you happen to take the MR1650UA outside of the US, you are able to pick up European frequencies so that you can enjoy your music abroad as well.2. RDS Tuner"RDS" stands for "Radio Data System" and it allows FM broadcasters to send far more than just an analog audio signal out over the air waves. Using a 57 kHz "subcarrier," stations can transmit digital RDS data for reception by RDS-equipped FM tuners. Depending on what the broadcaster transmits and what your tuner can pick up, you can receive information such as the name of the artist/song, name of the station, genre, traffic information and more.3. Front AUX (Auxiliary) InThis input on the MR1650UA 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.4. Output Power: 70 Watts x 4 ChannelsThe MR1650UA 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.

Since the MR1650UA is under the sun a lot of the times, the outside shell has a Ultra-Violet coating to protect it from the damaging effects that the sun offers. The PC board is also coated to have the protection that IT needs from the corrosion that humidity and salt can bring on over time.

A lot of us have had the battery die at one point or another. Sometimes we might just need to replace it.