Tissot Seastar 2000 Professional Powermatic 80 Featuring A Swiss Automatic Movement, 46mm 316L Stainless Steel Case, Sapphire Crystal On Front And Case Back, Screw-Down Crown, Unidirectional Ceramic Bezel, Helium Valve, Blue Gradient Dial And A Stainless Steel Bracelet Featuring A Folding Clasp With Safety And Diver Extension