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Title: Don't bother if you value your $$$$
Review: This thing eats batteries for breakfast, lunch and dinner! The first time out it killed the 2 AAA cells before it got a single satellite. With fresh Duracell Ultras I was able to get 4 sats after about 15 minutes, but after another 1/2 hour or so of reading through the manual and going thru the menus, dead batteries again, this time it killed the 2 in the Visor as well as its own.As far as any obstructions, I was on a beach in Key West, FL. No trees, buildings, etc., etc...With 4 fresh batteries I was able to get a lock on 5 sats and display a very poor looking map of my location. Elevation read 307', yet I was on a pier only 4' off the surface of the Atlantic ocean.I can think of better things to blow $150 on. Glad I wasn't lost when I was trying to use it, or I might never had made it back to warn you....
