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The Watch uses photoplethysmography technology (PPG) that utilizes the green LEDs to measure heart rates. [143] [144] To gauge a user's heart rate, the watch flashes green light from the LEDs at the skin and records the amount of this light that is absorbed by the red pigment of the blood. [145]
The first digital watch was the Pulsar, introduced by the Hamilton Watch Company in 1972. The "Pulsar" became a brand name, and would later be acquired by Seiko in 1978. In 1982, a Pulsar watch (NL C01) was released which could store 24 digits, likely making it the first watch with user-programmable memory, or the first "memorybank" watch.
The manufacturer's module number stamped on the stainless steel back of the watch is 3198. Interestingly, the watch has the same manual as the AE-1200WH and the AE-2100W because these models have the same functions. [1] Another function of the watch is the test used to find faults in the segments of the Liquid Crystal Display.
The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.
The Casio CA-53W is a digital calculator watch manufactured by the Japanese electronics company Casio and was introduced in 1988 [1] as a successor to the CA-50. It became famous for its appearance in the American science fiction films Back to the Future Part II (1989) and Back to the Future Part III (1990) [2] and later for appearing in the American TV series Breaking Bad (2008–2013).
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This is an accepted version of this page This is the latest accepted revision, reviewed on 15 February 2024. Finnish manufacturer of compasses, dive computers and sports watches Suunto Oy Suunto's headquarters and production facilities in Vantaa, Finland Company type Subsidiary Industry Measuring instruments Founded 1936 ; 88 years ago (1936) Founder Tuomas Vohlonen Headquarters Vantaa ...
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