I have been using my Garmin GPSMAP 78 for a month now. Easy to use if you download the manual from Garmin.I also downloaded Garmin Base Camp free from Garmin. You can edit your tracks on your PC and transfer back to your GPS. I also purchased the power adaptor,mount and case. I use it on my boat in South Louisiana in freshwater canals that all look alike. I also mark all the good fishing spots. This is a must for the weekend fisherman. It also floats!!! The only added improvement would be a touch screen.
For what you get, this model is very simple to use, simple to get your data out and put in other forms. While not used in a maritime setting, we do cross streams, and wander down by the riverside....so the floating is nice. This was a big upgrade for me from older systems....so I was impressed with the bells and whistles too.
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Product Description
The Garmin GPSMAP 78 1.7MB Marine-Friendly Handheld GPS Navigator features crisp color mapping, high-sensitivity receiver, new molded rubber side grips, plus a microSD card slot for loading additional maps. The card slot is located inside the waterproof battery compartment, so you don't have to worry about getting it wet. It comes with built-in worldwide basemap and 1.7MB of map storage space. GPSMAP 78 also supports BirdsEye Satellite Imagery (subscription required), that lets you download satellite images to your device and integrate them with your maps. And the unit floats in water, and is IPX7 waterproof to withstand the accidental dunk or splash in the lake.
Product Features
Color: One Color | Size: One Size
• Marine-friendly handheld with high-sensitivity GPS receiver and 2.6-inch color TFT display
• Perfect for boating/watersports--waterproof to IPX7 standards; floats in water
• Built-in worldwide basemap; microSD card slot for loading additional maps
• Get a detailed analysis of your activities and send tracks to your outdoor device using Garmin Connect
• Supports geocaching GPX files for downloading geocaches and details straight to your unit
• 1.7MB built-in memory
• Transflective, 65-K color TFT display
• 160 x 240 pixel display resolution
• MicroSD card slot; 20 hours battery life
• Waterproof (IPX7); Floats
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