Alpine products do not ship to Puerto Rico.Geek Squad® installation is strongly recommended for this product. Please visit your local Best Buy store for details.50 watts peak power x 4 channels (18W x 4 RMS)For powerful sound.Apple iPod-readyCompatible with 5th-generation iPod video, 1st-, 2nd-, 3rd- and 4th-generation iPod nano, 1st- and 2nd-generation iPod classic, 1st- and 2nd-generation iPod touch. Also compatible with iPhone® 2G, 3G, 3GS and 4G.CD, CD-R, CD-RW, MP3, AAC and WMA playback formatsFor listening to your music.Front-mount auxiliary input and USB portProvide quick and easy connection of an MP3 player or other portable audio device.1 pair of preamp outputs (2V)For connection to a separate amp (not included).White LCD with clockFor easy navigation through playlists.Detachable faceplateFor added security.AM/FM tuner with 18 presets (6 AM, 12 FM)Find your favorite channels in an instant.6 EQ modesInclude flat, pop, rock, jazz, vocal and club for custom sound. Also features bass and treble level adjustments.Single DINFor easy installation.Search optionsInclude QuickSearch technology for access to artists, songs, albums, playlists and radio stations. Percentage search uses preset buttons for quick jumps to specific parts of lists in your music library.Playback optionsInclude play, pause, forward and backward. M.I.X. Mode includes 1 (folder), all (random play) and random (CD only).Apple, the Apple logo and iTunes are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. iPod is a trademark of Apple Computer, Inc.