Lowrance iFinder Map&Music Hiking GPS Waterproof, handheld GPS navigator with built-in continental U.S. and Hawaii background map Plays MP3 and Ogg Vorbis music files; MMC/SD card slot stores maps and music files (card not included) 12-parallel-channel GPS and WAAS receiver; 3-inch backlit LED screen with 240 by 180 resolution 1,000 waypoints, 1,000 event markers, and 100 routes; runs for 12 hours on 2 AA batteries (not included) Includes headphones and cigarette plug adapter; measures 2.54 by 5.58 by 0.95 inches; 1-year warranty