The CITIZEN Corso collection offers a classic, contemporary style for the simple watch wearer. A functional simplicity with a touch of elegance. Featured in two-tone stainless steel with a complimentary silver-white dial with diamond accents. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number J730. Case size 29mm. Water resisitance: WR (splash resistant). Mineral crystal. Limited 5 year warranty.