These devices are waterproof and meant for some serious wear and tear. They offer a USB interface, and can be used by the military, hikers or what have you. You can also save points on your trail using a feature called TracBack.
Other features include functions for military skydiving from planes as well as a barometric altimeter and electronic compass. We don't know when these new Foretrex models will be released or how much they'll cost, but we'll be sure to keep you posted.