Automatic mechanical movement, Tissot Calibre Powermatic 80.601 base, with approx. 80 hours power reserve and operating at about 21600 vph (or ~430 movements per second). Silver-tone stainless steel round case measuring 40 mm diameter by 11.5 mm thick equipped with a fixed silver-tone stainless steel bezel and transparent screw-down case back. Features an open heart silver dial accented by rose gold-tone hands and index hour markers, along with minute markers on the outer rim for analog time indication. Comes complete with a scratch-resistant sapphire crystal glass cover, pull/push crown mechanism, 21 mm wide butterfly clasp bracelet, and water resistance up to 100 meters (330 feet).