Tissot Seastar 1000 Powermatic 80 | T1204071108101The Tissot Seastar 1000 merges style and performance without compromising either. With its water resistance up to 30 bar (300 m 1000 ft), screw down crown and case back, it is the ultimate diving watch, now combined with the energy of the Powermatic 80 movement offering up to 80 hours of power reserve when most of automatic movements boasts around 40 hours.