Link: http://www.geek.com/articles/mobile/motorola-launches-a-brute-for-sprint-nextel-20100126/

This one is what you need -

the new Motorola Brute i680 is no exception. The new rugged clam shell phone is so tough that it meets Military Specification 810F which protects it for dust, shock, vibration, low temperature, high temperature, low pressure, solar radiation, salt, fog, humidity and blowing rain....

Rather cheap at $119.99 - and very rugged. No word on weather dropping it in a toilet will kill it.