Summary: maybe my bad luck. Takes a long time to get satellite signal and keep losing it afterwards. Sent for repair. Worked ok 1st trip then same problem. Sent for repair again and got a replacement unit. After first couple of trips - same problem. No tall buildings in my area.
Pros: If it can lock on to signal and stay on then it is a good product
Summary: Received unit as a gift. Would not recommend to anyone. Car adaptor died the first week. Spoke to custmer service representative who barely spoke English who promised it would be replaced. Repeated my adress and spelled it twenty times. Bought a house charger to keep it operational. Six months later still no car adapter. Went and bought one. Unit freezes constantly. At times refuses to shut off, slow to turn on.