Citizen CA4630-53E Eco-Drive chronograph watch The Citizen CA4630-53E Eco-Drive is a sturdy men's watch with a tough black dial and strong steel watch strap. This model has an Eco Drive movement that is powered by light, big advantage: never replace a battery A fully charged one can last up to 270 days with its energy, so you can easily take this watch off for a while without it stopping. With a water resistance of up to 50 meters, you can basically take a shower with this watch, but we recommend that you do not go swimming with it. The case diameter of 42 mm makes this watch suitable for any wrist, it is not too big but certainly not too small either. Pros & cons + Eco-Drive: energy from light.+ Beautiful round case.+ Chronograph. - No tachymeter.- You can't swim with it. Manual of this Citizen watch This watch contains a Citizen Miyota B620 movement, find the manual here. Shortenable