From the bulova marine star collection, this watch is an impressive combination of precision craftsmanship, rugged durability and timeless style. 37. 5mm gold ion-plated and stainless steel case and sapphire crystal rotating ratchet bezel with blue anodized aluminum insert blue sunray dial with luminous hands and markers, calendar, small sweep and screw-back case sapphire crystal two-tone stainless steel bracelet with a push-button fold-over clasp water-resistant to 100 meters