The watch cases of the European version of the E855 were manufactured in stainless steel, in 14 carat yellow gold with stainless steel back, in 18 carat yellow gold and in 18 carat red gold. The K825 was used in the models of the E855, the E859 (also referred to as Polaris, in two versions of 19), and the E861. This calibre consisted of 241 individual parts and was built in a quantity of about 45,000 over the course of ten years. This watch had a non-rotatable bezel.Īutomatic alarm wristwatch with date indication Īlso in 1959, the Memovox Automatic (model E855) received a date display with the automatic caliber K825. In 1959, the Deep Sea Alarm Automatic (reference number E857), the world's first diver's watch with an alarm function was developed, containing the K815 caliber. At the same time the Memovox World Time was offered, with the time zones printed on the dial - it could therefore be used to calculate the time in other time zones.Īutomatic alarm wristwatch for divers The automatic winding of this watch had a pendulum, which rotated in an angle of about 110 °, It was limited by two springs and stored the energy in the barrel for the time function.įor the company's 125th anniversary, the Memovox Parking was sold in 1958, with the central alarm disc on the dial printed with markings to set the parking time. In 1956 Jaeger-LeCoultre launched the K815 caliber, the world's first automatic alarm wristwatch, the Memovox Automatic. The Memovoxes in North America were distributed by the company Vacheron-Constantin-LeCoultre, a subsidiary of Longines-Wittnauer. An exception were the case bottoms made of stainless steel, which were always engraved on the inside with LeCoultre on both European and US Memovox watches. Accordingly, the dials and case shapes used in the US models differ from the european ones. The calibers for the American market were encased in the USA in watch cases that were locally produced. From 1955 on, Memovoxes were also available equipped with the caliber K814 which had a date display.ĭue to the Smoot-Hawley Tariff Act, the Memovox models for the American market were printed and engraved with LeCoultre instead of Jaeger-LeCoultre until 1980. Memovox watches were also sold with Logo on the dial and bridge engraving by Cartier, Gübelin (here under the name Ipsovox), Dunhill and Van Cleef & Arpels. As a result, Memovox watches had two crowns for winding. The time and alarm function were separated by constructing two separate barrels which ensured that the power reserve of the clock was not reduced by triggering the alarm function. The K601 also referred to a later quartz movement by Jaeger-LeCoultre.
These first Memovox models were equipped with the watch calibres K489, K489/1 or K601, which were wound manually. The company Vulcain had already produced the world's first alarm wristwatch named cricket in 1949. In 1951, Jaeger-LeCoultre's first alarm wristwatch was released under the name Memovox. 5 Automatic wristwatch with date for divers.4 Automatic alarm wristwatch with date indication.3 Automatic alarm wristwatch for divers.
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