In Lieu of a battery it truly is powered by a little photo voltaic panel around the watch encounter (the 'Eco Generate') and thanks to 'Atomic Timekeeping' it could possibly claim being the 'most exact watch on the planet'. They made the 1st German pilot watches, which have been DIN-Accredited. https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/