DESC: The 300 is the base model in Garmin's Colorado line. It offers a rich presentation and easy-to-use controls. Its centerpoint of control is an innovative Rock 'N Roller wheel that allows you to input data with ease. You'll be amazed with its rich content and features that blow away past models. A built-in 3-D basemap handles general map navigation with ease. You'll get crystal clear image rendering from the 3" diagonal, 65K color TFT display with 400x240-pixel output. It offers wireless exchange of user routes, tracks, waypoints, geocaches, images and ANT wireless communications.