Citizen Eco-Drive® technology harnesses the power of any light source so it never needs a battery. This men's Citizen Eco-Drive® watch has a black dial in a round case, shows the date and has a 180-day power reserve. It is water-resistant up to 100 meters and includes a five-year limited manufacturer warranty, with an additional one-year warranty upon registering your watch with Citizen. We are an authorized Citizen dealer.