Water resistant Mineral crystal Japanese-Quartz movement Case diameter: 27mm Water resistant to 50m (165ft: in general, suitable for short periods of recreational swimming, but not diving or snorkeling Citizen quartz watches contain the same high quality manufacturing, beauty, and style as the higher-end citizen eco-drive models, but at a much lower price. Powered by standard battery technology, the Citizen quartz watches are reliable and easy to maintain.