The Panasonic Strada CN-GP50U has a price tag of $500 and comes with all the features of the not-portable model, such 
Panasonic has recently released its Strava GPS system codenamed CN-GP50N, but the latest addition to their small catalog of navigation systems is the CN-GP50U – which has became their first real portable GPS system.
as preloaded maps from Navteq of the US, Canda, Puerto Rico and Mexico, a slot for SD memory cards, bluetooth so you can make a call and have hands-free, and last but not least, a Voice Command function so you don’t have to touch the screen in order to set a command, just say it out loud and the new Panasonic Strada GPS is suppose to understand what you want to do.
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