A casual style with bold detailing at an affordable price, the Eco-Drive PRT style truly represents the every day watch. Displayed in a black-tone stainless steel case, black/grey striped nato strap and black dial with slight stripe detailing. Featuring 8-month power reserve indicator, cyclops date magnifier and date. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number J850.