We used this fishing/hiking to 12,500' in Colorado's Never Summer Wilderness Range. We checked it EVERY time we saw an elevation marker, probably more than 20 Xs. It was always within 100' either way. Just be careful not to turn the dial when handling it. Keep it in it's case. We rely on an altimeter compass to find our way with maps. Cant trust a GPS when you are really 34;out there34;. Never use them at all.
Rating: [5 of 5 Stars!]