The Geko 201also includes four fun, interactive games that transform the great outdoors into a virtual board game. 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. Features: Accuracy: 10 feet or less with WAAS Easy operation: five buttons for one-hand use Weight: only 3.1oz with batteries Compact size: 3.9" x 1.9" x .96" High-contrast display: 64 x 100 pixels Battery life: 12 hours on 2 AAA batteries Waypoint/Route storage: 500/20 x 125 Automatic track storage: 10,000 trackpoints and 10 saved tracks External ports: PC connectivity and external power Waterproof: submersible for 30 minutes in one meter of water (IEC 529 IPX7 standards) Entertainment: four interactive, outdoor games Box Contents: Geko 201 User's Manual