Gekos are the smallest and lightest waterproof GPS units on the marketinexpensive, with sleek designs and simple operating systems. With its sturdy, dark-gray case, the Geko 301 packs an amazing amount of functions into its slim frame. It has all the features of the Geko 201, plus an electronic compass and a barometric altimeter. The compass provides bearing information while you're standing still, and the altimeter determines your precise altitude and provides a 12-hour pressure-trend tool for gauging changing weather conditions. The Geko 301 also includes five interactive games that transform the great outdoors into a virtual board game, including the new Gekoids, which takes advantage of the electronic compass. You can also enjoy a good workout while chasing a virtual lizard in Geko Smak, match symbols in a grid version of Memory Race, navigate to reference points without crossing one's trail in Nibbons, and collect symbols along a path in Virtua Maze. Geko 301 Features: Built-in electronic compass Barometric altimeter for elevation and weather pressure measurement Accuracy of three meters or less with WAAS Five simple buttons for easy, one-hand operation Weighs only 3.4 oz (with batteries) Compact 1.9" (W) x 3.9" (H) x .96" (D) size 64 x 100 pixels high-contrast display Up to 9 hours of battery life (typical use) on two "AAA" batteries 500/20 waypoint/route storage 10,000 trackpoints and 10 saved tracks available External port for PC connectivity and external power Submersible for 30 minutes in one meter of water (IEC 529 IPX7 waterproof standards) Five entertaining, interactive outdoor games Package Includes: Geko 301 Manual