The Arrows Ultra Slim is just 0.26 inch thick but runs Android 3.0 Gingerbread and features an AMOLED display coated in Gorilla Glass. It's also waterproof, able to withstand submersion in water and tell the tale.
Taking a page out of Nokia's playbook, Fujitsu's aptly named Windows 7.5 Waterproof runs Mango and sports a 3.7-inch screen. The handset is also waterproof and dust resistant. It comes in wild candy colors, too, like pink and yellow.