Garmin introduces the cool Colorado series of handheld GPS devices for outdoor, marine and fitness enthusiasts at the CES 2008.

The Garmin Colorado handheld GPS devices feature the so called Rock ’n Roller wheel. It allows you to operate its many features with just one hand.

The Colorado 400t gives hikers state-of-the-art 3D elevation perspective and preloaded U.S. topographic maps. The Colorado 400i offers anglers shoreline details, depth contours and boat ramps for U.S. inland lakes and navigable rivers. The Colorado 400c is your coastal companion, providing chart coverage for the coastal U.S. and Bahamas. The Colorado 300 features a worldwide basemap with shaded relief.

Colorado users will be the first to experience Wherigo, the newest GPS-based activity from Groundspeak, the people who made geocaching a worldwide phenomenon.
Wherigo (pronounced "where I go") is a toolset for creating and playing location-based multimedia experiences in the real world. Using the Wherigo platform, Wherigo authors can build adventure games, historical tours or other innovative activities. Wherigo players use the Colorado or other GPS device running the Wherigo Player application to visit physical locations, use virtual items, interact with virtual characters and solve real world puzzles.

The Garmin Colorado GPS devices feature a 3 inch screen, 15 hours of battery life from two AA cells, electronic compass, barometric altimeter, SD Card slot, and photo viewer.

The Colorado 300 has a suggested retail price of $499. The Colorado 400t, Colorado 400i and Colorado 400c have a suggested retail price of $599.
Via this Garmin CES 2008 announcement.