Invicta Men's 11510 Subaqua Noma IV Chronograph Purple Dial Black Polyurethane Watch Swiss quartz movement Flame-fusion crystal; stainless steel case; black polyurethane strap with stainless steel accents Chronograph functions with 60 second, 30 minute and 1/10th of a second subdials; date window between 4:00 and 5:00 Purple perforated dial with silver tone and white hands and hour markers; tachymeter scale on inner bezel; luminous; unidirectional black ion-plated stainless steel bezel; black ion-plated screw-down pushers and crown with protective clasp Water-resistant to 500 M (1640 feet)