Title: It sucks!
Product review: The GPS unit is mounted on the front windshield.1. Without the antenna, it takes forever to get the GPS lock or no lock at all. I am talking about hours!2. With the antenna, it works better but occasionally it does not get GPS lock for at least 30 minutes!3. You better follow its navigation instruction. If you don't follow its instruction, may be 2 times, the unit freeze. This is a software bug!As a summary, it has GPS signal reception problem and software bug. I am an engineer who designs GPS vehicle tracking unit. This model definitely needs more engineering work to make it a competitive product.
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