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Review title: Great when it works which isn't often.
Product review: Easy to use, accurate navigational device ... when it works. I bought the first unit and powered it up but got nothing. Tech support suggested I exchange it for a new one. The second one worked quite well and was a pleasure to use ... for three weeks. Then it went dead and no amount of charging or resets made a difference. Returned it and got a replacement that also went dead after three weeks. I'm waiting for the fourth unit to arrive but don't have high hopes of having it work.I paid almost $800 for this unit but think it was a waste of money. It's a great product but it is too unreliable.
