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Title: Total waste of money
Review: I also had nothing but problems. Could not maintain a lock to track position even while walking around my yard, forget about moving around in a car. It simply devoured my Visor's batteries. Took 5 minutes to even get a lock to track position which was immediately lost when I moved. Their customer service at the manufacturer was non-existent, they would refund the cost of the unit but not the $... shipping. Even argued that it was not defective as they has "tested" it when it came back to them. Do yourself a favor and wait for the next GPS module to come out.
