Citizen Men's BV1080-18A "Eco-Drive" Stainless Steel and Nylon Sport Watch Not only does this Citizen Men's watch feature timeless appeal, but its light-powered design makes it a smart choice for the environment too. Japanese Quartz movement with analog display Eco-Drive feature allows watch to be powered by light, meaning it never needs a battery. Protective mineral crystal dial window Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving