The 255W features predictive technology that provides faster satellite lock, a redesigned screen with more information, terrain maps, and an exciting new photo navigation feature. The 255W adds complete maps for North America and Text-to-Speech, so you get turn by turn spoken directions with the real names of streets (e.g. "turn left in 50 feet at Nebraska Way", rather than merely "turn left in 50 feet"). The 255W also offers a wide 4.3-inch (diagonal) screen that displays 70% more of the road around you.
The nuvi 2x5 models all sport the slim design that Garmin introduced with the 200-series last year, so they all fit comfortably in your pocket or purse, and a rechargeable lithium-ion battery that makes them convenient for navigation by car or foot.All of the models include useful travel tools like a JPEG picture viewer, world travel clock with time zones, currency converter, measurement converter, calculator and more.
Important Product Information: This device features a "screen lock" feature. This is a standard feature on all nuvi 2x5 and 7x5 Garmin units. If you slide the "Power" key to the right, it will lock the screen and prevent any accidental touches. Once the screen lock feature is engaged, the screen will go black/gray after about 15 seconds to save power on the device. To unlock the screen, just slide the "Power" key to the center position. This feature is really targeted for "Pedestrian" mode so that a user can put the device in his or her pocket/purse and quickly unlock the screen instead of powering on/off continuously. For more information, see page 5 of the product manual.