Citizen Women's EW9134-51E Eco-Drive Silhouette Two-Tone Watch Light powered eco-drive Japanese-quartz movement; charges in natural sunlight or indoor light Durable, hardened mineral crystal Case diameter: 21.81 mm Two-tone stainless steel case; black dial Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion