With the introduction of expandable memory, colour screened units and the new MapSource TOPO DVD-ROM software Garmin stay very much at the forefront of GPS technology. For the first time detailed topographical maps can be downloaded from a PC onto a compatible Garmin GPS unit to provide easier navigation and a clearer understanding of your surroundings. All Garmin units are water resistant, have long battery life and are intuitive to use where ever you are in the world!