Omega authentic women's watch model 428.18.26.60.04.002 (also known as De Ville Tresor Mini Quartz). Polished stainless steel case, fixed diamond set bezel on white dial with polished silver tone hands and blue Roman numeral hour markers, powered by Swiss quartz movement Calibre 4061 engine features push-pull crown, scratch resistant sapphire crystal, water resistance up to 30 meters (100 feet), also known as model number 42818266004002. Solid case back and unique case shape available with blue alligator leather strap.