Good unit if features of 496 not needed, you'll need a memory cartridg
22 May 2011
Summary: Great unit overall, lots of features, good screen, can be washed out by direct sunlight, great battery life. You will need an extended memory cartridge to get the most out of this unit, I recommend the 512M cartridge. This unit is essentially a GPSMAP 496 but without the capability to display XM Weather (XM Weather requires a special antenna and a monthly subscription).