Exceeded my expectations. Tracking, back track, GPS location, elevation profile etc was accurate. Lots of options to display key data you want to see as you hike.A best buy unless you want to load colour maps - which I don't. Its a little bulky compared to the wrist watch style, but has a larger display, and easier to use wrist mounted than the larger and more expensive hand-helds.Only drawback - its not really waterproof, just water resistant. Don't wear it in the swimming leg of a triathalon!