Citizen Women's EW3134-54L Eco-Drive Sport Watch Light powered Eco-Drive Caliber E000 Japanese-quartz movement; Charges in natural sunlight or indoor light Max power reserve: 180 days; Low charge warning: 7 days; Quick start ability; Charge time from stop state to max charge: Incandescent Light - 72 hrs, Outdoors, Cloudy (10,000 Lux) - 22 hrs, Outdoors, Sunny (100,000 Lux) - 11 hrs Durable, hardened mineral crystal; Case diameter: 31 mm Two-tone stainless steel case; Dark Blue dial; Day-and-date functions Water resistant to 660 feet (200 M): suitable for recreational scuba diving