Bought this as a used item. Was exactly as described. I bought it to use on my boat alongside my Samsung N150 Plus Netbook (also bought from Amazon at a great price) Once I figured out the correct COM port to use (software problem not GPS unit),it connected via bluetooth to my netbook and works a treat. Finds 3 or 4 satellites very rapidly and often more. I use self scanned and calibrated charts and this unit is absolutely spot on every time, right down to the correct pontoon in the marina. Have also used it with a scanned and calibrated Ordnance Survey map in the car and that worked brilliantly also. Haven't really tested the battery life as it is always connected via USB port on my netbook to keep charged. I do know it lasts for well over 6 hours and probably twice that? If you want a GPS unit for chart work this is the one to use.
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