I owned one,and there not waterproof. Very disappointed.

This hand-held unit from Garmin is pre-loaded with a whole range of coastal charts and comes with a three-axis compass for charting your precise direction, barometric altimeter, full-color 2.6-inch screen and micro SD card slot for loading external charts and maps.

Very good unit. Great price

Good value for money, I am enjoying using this instrument for my research purpose. Excellent features in terms of altimeter and barometric pressure is an added advantage.

I use a GPS when kayaking and I replaced a older model Garmin GPS with the GPSMAP78. The main advantages I find is that this model is waterproof and floats if dropped overboard. The setup is straight forward and the menu is easy enough to access via the keys, which I prefer over a touch screen.

Garmin quality and design; Fast delivery from Crutchfield and tech support if needed

Haven't found any.

This product is a great new one from Garmin because it floats and does not cost an arm and leg. If you want a basic unit without altimeter and compass, this is a good choice (I didn't need compass, but did need floatability and water proof).

Rugged; Good Value; Reliable

large size

This would be a fine unit if you were only using it minor recreation. The color maps and visable tracks make seeing where you've been easy. However, I use this unit for work where I'm out in the woods all day.