Citizen CA4593-15A Eco-Drive Chrono watch The Citizen CA4593-15A Eco-Drive Chrono is a chic and functional men's watch with a beautiful ivory white dial and accurate time display. You don't have to worry about battery replacement with this watch, because you don't have to because this Citizen is charged by light. Fully charged, it can be stored in the dark for up to 270 days before shutting down. With a water resistance of up to 10 bar, you can safely go swimming with this watch (diving is not possible). The chronograph and 24-hour indication are convenient to use.  Pros & cons + Eco-Drive: energy from light.+ Long energy reserve.+ Chronograph. - No eternal calendar.- You can't dive with it. Manual of the Citizen CA4593-15A This watch contains a Citizen Miyota B620 movement, find the manual here.