Nixon Siren White WomenDesign The Siren takes cues from sustainable, high end activewear, and aims for equal parts comfort, function, and style. Durability Custom molded case made from #tide ocean plastics with stainless steel caseback and gasket pushers. Special Feature Basic tide high low tide functionality, chronograph, and countdown timer. Plus, the patented Locking Looper keeps the band secure. Movement Custom digital module with basic tide. Functions include time of