CITIZEN Eco-Drive Chronograph AT1086-54G"Eco-Drive" solar powered generating system, meaning that there is no need to ever change batteries; 150 Days month power reserve when fully charged.Metal : Stainless SteelCase Diameter : 44mmMovement : solar powered ChronographCaliber : Citizen H570 Made in JapanStainless Steel braceletWater resistance to 100 meters/ 10 bars/ 330 feetDial : Black dial with highly luminous hands and hour markersOne year International warranty