"We tried out the GPS device initially in a small, rural town in Northern Nevada. In an open Jeep, it gained a location fix quickly, and kept us entertained with odd, synthesized Britishisms mixed into the directions. "There, that wasn't really so bad now, was it?" its default "Christopher" voice might announce, as we neared our destination.
However, the N800's screen fared poorly in direct sunshine, even turned up all the way, a setting bound to drain the battery very quickly. And, we worried about how long the receiver and N800 might survive in the Jeep, let alone on a bicycle or backpack. Neither unit is sealed in any way against dust and water infiltration, making them pretty impractical in any kind of camping situation -- arguably something a couple of plastic bags might fix. Additionally, the N800's battery life will be much, much shorter than that of a typical handheld GPS, which can go all day." Read more here: