The tissot seastar 1000 is the ultimate water sport watch, with its high water-resistance up to a pressure of 30 bar (300m/1000 ft), screw-down crown and caseback as well as its unidirectional steel bezel with aluminium ring and highly luminescent material for an excellent readability in the dark. It has a 45mm stainless steel case and secures with a fold-over safety clasp.