Citizen Women's FB1090-57E Eco-Drive Calibre 4700 Diamond Accented Watch Light powered Eco-Drive Caliber H504 Japanese-quartz movement; Charges in natural sunlight or indoor light Max power reserve: 180 days; Low charge warning: 5 days; Charge time from stop state to max charge: Incandescent Light - 110 hrs, Outdoors, Cloudy (10,000 Lux) - 30 hrs, Outdoors, Sunny (100,000 Lux) - 12 hrs Durable, hardened mineral crystal; Case diameter: 32 mm Stainless-steel case; Black dial; Date function Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving