Lowrance 112-362 iWay 500C Portable GPS Navigator and MP3 Player Combination vehicle GPS navigation system and MP3 player with 5-inch color TFT display Built-in 20 GB hard drive with 10 GB for maps and 10 GB for MP3 files Built-in precision GPS WAAS receiver with 12 parallel channels Stores up to 5,000 MP3 files depending on compression rates and song lengths Measures 6.1 x 4.5 x 2.15 inches (W x H x D); 1-year warranty