- Worldwide basemap - 2.2" monochrome display, easy to read in any light - GPS and GLONASS satellites for faster positioning - Paperless geocaching - 25-hour battery life with 2 AA batteries See The Way eTrex 10 has an enhanced 2.2 in monochrome display that’s easy to read in any lighting situation. Both durable and waterproof, eTrex 10 is built to withstand the elements. Its easy-to-use interface means you’ll spend more time enjoying the outdoors and less time searching for information. eTrex 10 features the legendary toughness that’s built to withstand the elements – be it dust, dirt, humidity or water, none of which are a match for this storied navigator. Find Fun eTrex 10 supports geocaching GPX files for downloading geocaches and details straight to your unit. Visit OpenCaching.com to start your geocaching adventure. By going paperless, you're not only helping the environment but also improving efficiency. eTrex 10 stores and displays key information, including location, terrain, difficulty, hints and descriptions, which means no more manually entering coordinates and paper print outs. Simply upload the GPX file to your unit and start hunting for caches. Keep Your Fix With its high-sensitivity, WAAS-enabled GPS receiver and HotFix® satellite prediction, eTrex 10 locates your position quickly and precisely and maintains its GPS location even in heavy cover and deep canyons. The advantage is clear — whether you’re in deep woods or just near tall buildings and trees, you can count on eTrex 10 to help you find your way when you need it the most. Go Global The new eTrex series is the first-ever consumer-grade receivers that can track both GPS and GLONASS satellites simultaneously. GLONASS is a system developed by the Russian Federation that will be fully operational in 2012. When using GLONASS satellites, the time it takes for the receiver to “lock on” to a position is (on average) approximately 20 percent faster than using GPS. And when using both GPS and GLONASS, the receiver has the ability to lock on to 24 more satellites than using GPS alone. eTrex Quality eTrex stores data in universally accepted GPX file format so its compatible with a variety of computer applications (best when used with BaseCamp™. Includes a worldwide basemap, improved interface and added support for spine mounting. Withstands dust, dirt, humidity and water. Locates your position quickly and precisely, and maintains it even in heavy cover