Oniss #ON815-L Women's Austrian Crystal Bezel Black Ceramic Watch Precise Swiss Quartz Movement High Tech Ceramic Case and Band, Butterfly Spring Clasp Sapphire Crystal, Date Display, Inserted Austrian Cyrstal Bezel, Silver Hands and Markers Case Size: 34mm Diameter, 11mm Thickness Water Resistant - 30M, Screw Down Crown, Screw Fastened Caseback