This watch is the "automatic" choice for divers.Thanks to its very high water resistance (up to 30 bar / 300 m / 1000 ft pressure), a screw-on crown and a one-way rotating bezel that allows you to read the dip time, the Tissot Seastar 1000 is the ultimate dive watch.Additionally, this model is powered by a Powermatic 80 mechanism. A mechanical watch uses the energy generated by the person wearing it to operate. The mechanism works thanks to the movements of the wrist, although of course it can also be wound with a crown. The Powermatic 80 has an 80-hour power reserve sufficient for precise time indication, even after 3 days of not wearing the watch. Compared to the competition, which usually offers a power reserve of one and a half days, this mechanism is very efficient and innovative.