This Symbol MC50 PDA is targeted towards outdoor "on-site" use, so it's naturally a little bulky. It withstands a three feet drop onto "tile over concrete" at a temperature of 70 degrees F. Three feet is fine from a desk, but on a site you're going to be holding it in your hand. So unless you're Warwick Davis, star of Willow, Leprechaun, Leprechaun 2 and Leprechaun 3, three feet may be not enough.
Its other features are: Windows Mobile 2003, 64MB RAM/64MB ROM, 802.11b WiFi, 520MHz Intel XScale processor, 240x320 TFT-LCD, and optional 1.1 megapixel camera. There's even a strap on the back to make sure you've got a good grip so you don't drop it, in case Warwick Davis is actually standing right under you.