The Seastar 1000 Quartz Chronograph is Tissots ultimate,high-performance versatile watch that is at home underwater and on dry land. Impressive water-resistance up to a pressure of 30 bar (300 m/1000 ft) is combined with the energy of a Swiss-made quartz movement. With a screw-down crown and case back,unidirectional ceramic safety bezel and Super-LumiNova ensuring it is readable in the dark,the Seastar 1000 Quartz is an aquatic ace that truly has it all. The 45.5mm steel case houses a quartz movement with a sapphire crystal and a anti-clockwise aluminium black rotating bezel,screw-down case back and crown also offers additional protection against knocks. The Seastar 1000 Quartz Chronograph comes with an interchangeable quick release steel bracelet with a folding clasp push button release with a safety catch and a diver extension.