The Lowrance Iway 500C GPS navigation system features a one-year warranty, a 12-channel GPS WAAS receiver, and a 5" color TFT display with a 320 x 240 pixel resolution. One of the benefits of the Iway 500C is that it can double as an MP3 player. The system comes with a built-in 20GB hard drive with 10GB devoted to maps and 10GB for storing approximately 3,000 MP3 files. The Iway 500C's MP3 player functions allow users to browse files, create play lists, adjust music with an equalizer, and repeat, shuffle, and scan songs. The navigation system is also able to store up to 1,000 locations/waypoints and uses visual and audible cues for easy navigation. The system comes with a USB cable, cover, cleaning cloth, cigarette- lighter adapter, AC/DC power adapter, rubber base, and a mounting bracket. Though it comes with a rather large screen, the Iway 500C is bulkier than other GPS systems that have smaller screens with the same resolution. Also, the unit has an average amount of Points-of-Interest, but not as many as some competitors' units. Overall, the Lowrance Iway 500C is best suited for users who want a basic GPS navigation system with the ability to store and play MP3 files.