Citizen's Eco-Drive technology uses the energy of light (even artificial), transforms it and accumulates it in a lithium-ion cell that is constantly recharged, thus creating a power reserve of several months. This is why every Eco-Drive movement does not require battery replacement and consequent disposal. Functions: hour, minutes and seconds in the middle. Movement: Citizen E031 Eco-Drive caliber (infinite light charge), with 180-day power reserve Cash desk: - dimensions: diameter 30.50 mm. with a thickness of 7.50 mm .; - material: hypoallergenic stainless steel; - back: in steel, locked by pressure; - fixed external bezel with polished stainless steel finish with rosé PVD treatment (Physical Vapor Deposition); - stainless steel crown, positioned concealed under the bezel 'at 4'; - declared water resistance up to 5 BAR (50 meters); - white dial with circular markers, applied in shiny golden metal (at 12 o'clock a small diamond has been embedded); - glass: flat sapphire. The link bracelet is made of hypoallergenic stainless steel, can be shortened, handle height 12 mm, butterfly opening, by pressing the two side buttons next to the closure. The product is new and original, complete with an instruction manual and a 24-month Citizen warranty.