Here are two GPS navigators from Lowrance, the iWay 250c, 350c.
The Lowrance iWay 250c has a 3.5-inch LCD screen. supports for MP3 and JPEG playback. It comes with a 2GB SD/MMC card preloaded with “NAVTEQ mapping detail for the USA & Canada or Western Europe featuring millions of accessible Points-of-Interest”
The Lowrance iWay 350c has also a 3.5-inch LCD screen, other than MP3 and JPEG supports, it supports also FM Radio. The iWay 350c has a 4GB hard drive with preloaded maps and it supports SD/MMC cards.