The first Seiko divers watch was launched in 1965. It was an automatic, self-winding 150m watch with an outsized crown, rotating bezel with a special gasket and wide hands and dial markers. Lumibrite is used on the hands and dial markers to improve legibility. An accordian style silicone strap is used to overcome the problem of expansion and contraction at different depths. Over the years, depth of water resistance increased up to 1000m. In 1978, a diver’s featuring quartz movement was launched. In 1982, alarm and chronograph functions were integrated. In 1992, a Kinetic Diver’s was launched.