Garmin eTrex 10 2.2" Portable GPS: * 2.2" monochrome display - Presents information clearly and brightly for optimal navigation * Durable and waterproof - Withstands dust, dirt, humidity and water * Download GPX files and details to the unit for paperless geocaching - Stores and displays location, terrain, difficulty, hints, descriptions and more * WAAS-enabled GPS receiver and HotFix satellite prediction - Get quick and precise locations * Tracks both GPS and GLONASS satellites simultaneously - Lock on to a position about 20 percent faster than with GPS alone, as well as the ability to lock on to 24 more satellites * Battery - Lasts 25 hrs