Garmin 's model number be extremely confusing . I buy this and turn out that this be a very bad gp . pro : 1 . nice slim look . look sleek . but then again , this be actually a con . see below con : 1 . the nice sleek look be a thief magnet invite a bust window . 2 . the touchscreen do not work very well . type street name miss key many time . I suspect that its a processor issue . 3 . Voice command be a joke . it almost never get anything right . 4 . find place `` along route '' list do not auto update force you to go back and re-search to get update list as you drive along you route . I reture this and buy the 2460lmt instead from costco for 180 . it solve all of the above con . plus there be also a feature to update speed limit if need . who would have think that 2460 be better than 3790 ?