Oniss ON8107-L White Women's Chronograph Ceramic Watch Precise Swiss Quartz Movement High Tech Ceramic Case and Band, Push Button Butterfly Open Clasp Sapphire Crystal, Date Display, MOP Dial, Silver Tone Luminous Hands and Markers, 3 Dial Display (Day, Month, & 24 Hour Indicator) Case Size: 34mm Diameter, 11.52mm Thickness Water Resistant - 30M, Stainless Steel Screwed Down Caseback