However, aside from the radio receiver, these watches are regular quartz watches in all other aspects. The first prototypes of an electronic quartz wristwatch were made by the CEH research laboratory in Neuchâtel, Switzerland. From 1965 via 1967 pioneering improvement work was done on a miniaturized 8192 Hz quartz oscillator, a thermo-compensation module, and an in-house-made, dedicated built-in circuit .
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