The Tissot Seastar 1000 automatic Powermatic 80 has all of the
functions a diver could need: water resistance to 300 m, luminous
hands, with an additional luminous dot on the seconds
hand, a diving scale marked minute-by-minute up to twenty
minutes, then every five minutes, screw-in crown and back. The
43 mm diameter watch is worn with a steel strap with a folding
clasp and diving extension or rubber strap.