that, when not actively changing the time or date, was screwed down tight against the watch case, compressing its rubber gasket Gasket Rubber seal, usually clamped tight, that prevents moisture and dirt from entering the watch. That waterproofness was bolstered by a chunky crown Crown Small, decorative, external control used by the wearer to set time and calendars. Sometimes embossed with numbers and rotatable., possibly with cold or gloved hands, they were designed to be chunky, indexed to prevent accidental rotation, and sit external to the waterproof housing. To better aid the diver’s rotation of the bezel Bezel Circular ring surrounding, or just inside of, the crystal glass. pip it was time for the diver to ascend slowly to the surface. It glows in the dark to allow low-light usage. Sometimes embossed with numbers and rotatable.’s luminous lume Luminescent compound applied to the dial, hands, and sometimes bezel. As the mind’s judgment of the passage of time at these depths takes on a fluid, ethereal quality, an accurate and reliable timepiece was vital – when the minute hand ticked round to the bezel Bezel Circular ring surrounding, or just inside of, the crystal glass. Sometimes embossed with numbers and rotatable., a crude timer of sorts, that upon descending to the seafloor, is rotated in advance of the minute hand – the actual amount determined chiefly by the maximum underwater depth attained, with some adjustment due to time elapsed since any previous dive. is the rotating bezel Bezel Circular ring surrounding, or just inside of, the crystal glass. The key to the dive watch dive watch A style of watch distinguished by extreme waterproofing, an external rotating numbered bezel, and large hands. also produced a range of “Sports” divers that I can only hope were used for no such thing. Seiko Seiko A Japanese manufacturer of watches. Rated for depths up to 150-600 meters, they ensured a robust and functional timepiece to avoid overexposure to nitrogen that could accumulate in the diver’s bloodstream to deadly effect. that graced the wrists of professional and recreational divers alike. produced a series of well-respected dive watches dive watch A style of watch distinguished by extreme waterproofing, an external rotating numbered bezel, and large hands. From the mid-sixties, Seiko Seiko A Japanese manufacturer of watches.
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