"Poor GPS tracking"2.0 starson by kandalluramesh
Pros: Europe maps in addition to US (I have not tried europe), Bluetooth technology (works satisfactorily)
Cons: IRouting is not satifactory and GPS tracking lags behind by at least 100 feet
Summary: I purchased nuvi 770 3 months ago and was disappointed to see GPS tracking lags behind the real position by at least 100 feet. The unit instructs to make a turn into a street which has already passed. Terrible. I returned this one thinking i got a bad one. and purchased another new one and found out the same problem persists and i have returned that one also.I do not recommend 770 because GPS tracking lags behind by at least 100 feet. You wont recognize this deficiency until you have the map fully zoomed.