Summary: I don't recommend this unit. The memory is NOT protected and all data will be lost if the 8mb battery dies..which is what happened to me..I was lucky to not be relying on this as a life support..The seller was courteous on the phone but didn't seem worried at the possibility of someone coming to harm and stated they don't recommend relying on just one item and to have a compass or other means of navigation out of the forest.
Summary: I don't have a clue how this item works - I just took it out of the box. What I can tell you is that it does NOT accept a cigarette lighter adapter, as one might conclude it would, given that Amazon and other dealers include a cigarette adapter as an accessory.
Summary: Being an owner of both the Garmin eTrex, and the Magellan 200, I find that: DOWNSIDE ---------------- 1) The Magellan is slow to lock on and frequently cannot get 3D accuracy with even 4 satellites. 2) The carrying case *blows chunks*. A _cheap_ zipper bag that you have to take your belt off to wear it or remove it. Garmin's is form-fitting with a belt clip, clear viewing port, and velcro-- much better.