In this Silicium special edition, in addition to the robust case, the movement has also been upgraded with a Silicon Balance Spring, making this watch appropriate for water sports activities. High performance, with water resistance up to an impressive pressure of 30 bar (300 m/1000 ft), combined with the energy of the Powermatic 80 movement. TISSOT | SEASTAR 1000 | 43mm Blue Dial and Bezel; Blue Fabric Strap with Pin Buckle; Steel Case; Powermatic 80 hour power reserve.