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| 1962 | Piaget mechanical movement. Height 1.35 mm. |
| 1963 | Favre-Leuba presents the 'Bivouac' (cal. FL 251) with a mechanical movement. Height 2.95 mm. |
| 1965 | Buren introduces an automatic watch 'Intramatic' (cal. 1280). Height 2.85 mm. |
| 1972 | In May, Nepro launches the 87 LCD module. Height 4.5 mm. The flattest module in the world at that time. ITT USA presents a quartz watch. Height 3.3 mm. |
| 1973 | Piaget issues a quartz watch. Height 3.1 mm. Universal-Genève releases the 'Golden Shadow', 'Ultra Skin Automatic'. Automatic watch made of 18 K gold. Height of the movement 2.5 mm, total height of the watch 3.45 mm. (Ref.no. 174100) |
| 1975 | 'White Shadow Quartz', equipped with a Socrem SO2 motor and an IC by RCA. (Ref.no. 174103) |
| 1976 | Girrard Perregaux presents a movement (cal. GP 641) in Basle. Height 3.7 mm. |
| 1977 | Seiko Quartz. Height 2.9 mm (cal. 7830). |
| 1978 | Citizen Quartz EX1, caliber 7900. Without a battery the height of the movement is 0.98 mm, with battery 2.25 mm. The complete watch with gold case has a height of 4.1 mm. The price was between 6,000 and 10,000 Swiss Francs. In June, the Seiko Quartz (cal. 9320A) is presented to the press by Seiko. Movement's height: without battery 0.90 mm and with battery 0.95 mm. Entire watch 2.5 mm. Girrard-Perregaux: Ladies' quartz watch. Height 2.9 mm. Diameter 13 mm. At that moment the smallest movement in the world by volume. (Cal. GP 520) |
| 1979 | ETA SA, an affiliate of Ebauches SA markets the 'Delirium I'. Height 1.98 mm (cal. 999). A special edition 'Delirium II' with a height of 1.44 mm is launched in 1980, shortly after the Omega Dinosaure (height 1.48 mm). As with the other models in the Delirium collection, the back of the case is used as the main plate in which other parts of the movement are set. Extra flat battery Renata 32, height 1.1 mm. On the 12th of January this technical masterpiece was presented in Paris by Eterna. In the quest for the flattest watch possible, Eterna presented the golden 'Espada Quartz'. The Concord Watch Company marketed this watch under the name 'Concord Delirium' and Longines made it famous under the name 'Feuille d'Or' (cal. L795.2). Bulova introduces the thinnest LCD watch in the world, height 1.86 mm, the 'Phantom', for a price of US $ 5000. Seiko quartz, cal. 9320B, is released in July. Height of the movement: 0.95 mm. Entire watch 1.79 mm. Seiko quartz cal. 9300A. Height, with battery, 1.6 mm. Movement 1.5 mm. |
| 1980 | Dinosaure of Omega cal. 1355. Height 1.48 mm. Ladies' 'Delirium III'. Height 1.68 mm, presented January 11th 1980) 'Delirium IV' 0.98 mm. Basle 1980. Again marketed by Concord, Longines and Eterna. The sapphire crystal is only 0.19 mm thick and the battery, produced by Renata SA, has a thickness of 0.80 mm. Instead of hands there are revolving discs on which hands are printed. |
| 1981 | 'Delirium V' and 'VI' of ETA in the 'Magique' of Omega. Height 2.58 mm. Cal. 1356 and 1357. The first watches in the 'Delirium' series which are waterproof. The Twin Time of Eterna contains two watches, an analogue one with hands and a digital one with LC display. The total height of this golden watch is 4.5 mm. |
| 1982 | Jaeger-LeCoultre. Quartz movement. Height 1.8 mm with a diameter of 6.8 mm (cal. 601). |
| 1983 | Seiko IE20, IE70, IE50: movement of 9.5 mm in diameter. |
| 1984 | 'Flatline Combo' produced by ETA (cal. 985.331), 2.0 mm in height. 'Combo Dichroïque' also produced by ESA (cal. 988.311). Height 3.0 mm. and 'Combo Delirium', ETA (cal. 999.311). The 5A74 and 5A70 of Seiko is released in January. Height of the movement 1.3 mm. |
| 1987 | In June Citizen released cal. 7900. Height 1.5 mm. |
| 1989 | In June Seiko launches cal. 9A85A. The height of the watch without battery was 0.85 mm and with battery 1.43 mm, the thinnest ever made by Seiko. Limited production was in commemoration of the 20th anniversary of the 3500 caliber quartz wrist watch. |
Copyright © by Pieter Doensen
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