Rugged? Good with rain/continuous use?
Rugged for sure. They spend most of their time rolling around the floor of my truck and you cannot even IMAGINE how rough that is haha. Monster cans constantly emptying on them, people step on them, they fall out into parking lots, etc. Then when they are in use mine is always clipped to my vest and i use a remote mic, but when fugitives fight it has often been ripped off and thrown, fallen out windows, slammed against walls between me and the wall, etc. Of the six we have not a single one has been broken.
Battery life is impressive for the amount of use we put on them when we go out. Do NOT leave it in the car when its cold (read: 35 and under) out because the battery will drain right out over night even if its off. As for rain i left one in the snow for about an hour last week with my toughbook and it still works.