Not only is this bold timepiece powerful, but it also redefines atomic timekeeping. This remarkable dynamic model features timekeeping in 43 cities. It also has a perpetual calendar, dual time, alarms, and pilot's rotating slide rule bezel, Super Titanium ? case and bracelet, and a black dial complemented by bright orange tones with sapphire glass. Also features Eco-drive technology, powered by light, any light. Never needs a battery.