3.5-inch GPS. The device reportedly packs a 300MHz Atlas II processor, 32MB of NAND Flash ROM, 64MB of RAM, USB 2.0 connectivity, an SD flash card slot, rechargeable Li-ion, and a Samsung touchscreen as well. Moreover, you'll find a SiRF Star III receiver, headphone jack, built-in speakers, and a multimedia player and image viewer that handles MP3, WMA, OGG, JPG, BMP, and GIF formats. The unit measures in at 4.5- x 3.1- x 0.9-inches in size and weighs 7.1-ounces, holds a map of the USA on an included SD card, sports turn-by-turn guidance, and best of all, rings up at just under $155. Of course, this thing isn't the sleekest navigator on the market, but for $154.99, we'll give it a pass on aesthetics.