Oniss #ON820-LRG Women's Rose Gold Stainless Steel Black Ceramic Combo Black Dial Watch Precise Swiss Quartz Movement High Tech Ceramic Case and Band, Push Button Butterfly Open Clasp Sapphire Crystal, Date Display, Luminous Hands and Markers Case Size: 38.5mm Diameter, 11mm Thickness Water Resistant - 30M, Screw Down Crown and Caseback