Oniss Men's Black Swiss SS & Ceramic Sapphire Diamond Watch ON606-MGM Black Precise Swiss Quartz Movement Ceramic Case and Band, Stainless Steel Butterfly Connecting Clasp Sapphire Crystal, Date Display, Stainless Steel Screw Fastened Case back Push Button Deployment Clasp Water Resistant - 30M, Case Size: 29mm Diameter Excluding Crown, 4mm Thickness