The citizen gents eco drive watch features stainless steel case and bracelet grey dial with rose gold accents sapphire crystal and datethe watch has a 100m water resistance and is powered by citizen eco drive which harness the power of light from any natural or artificial light source converting it into energy so these watches never need a battery this modern classic watch has a timeless appealcitizen eco drivebm7251 53hcase size 41mmcase silver tone stainless steelstrap stainless stee