The design is simplicity itself: a steel case with monocoque construction (the movement’s inserted on the dial side) 42mm in diameter, and 10.75mm thick; the exterior of the case is clad in Duratect, which is Citizen’s proprietary titanium alloy and which is about 5 times more scratch resistant than standard stainless steels. The crystal is synthetic sapphire. The case exudes solidity; the screw-down crown is protected by crown guards; water resistance is 200 meters and resistance to magnetism is 4800 A/m (amperes per meter). The rechargeable cell inside the watch is a potential point of concern if you’re looking for a timepiece that will run indefinitely without any need for a watchmaker’s attention, but the manual for the Eco-Drive Tough says, bluntly, that “the energy cell should last for the life of the watch,” which given its simple and robust construction, should be a boringly long time… More here.
That’s a lot of watch for not a huge amount of money. Lovely clean design.