Tough means it’s pretty much indestructible, unless you go out of your way to break it. That means splash, dust and shock resistant, with a glare and scratch resistant screen and a rugged exterior. There’s also higher-than-normal volume (for noisy environments) and a belt clip for keeping secure. However, all of that hides a pretty basic specification headed up by a WAP browser and Bluetooth connectivity.
But that shouldn’t matter if your priority is keeping a phone in one piece in tough conditions. It retails for just under £200 sim-free.