Citizen Eco-Drive(tm) technology harnesses the power of any light source so it never needs a battery. This <em>men's</em> Citizen Eco-Drive(tm) Perpetual <em>Calendar</em> chronograph <em>two</em>-<em>tone</em> <em>watch</em> has a white dial. It is water-resistant up to 100 meters and comes with a five-year limited warranty. We are an authorized Citizen dealer.