Swiss mechanical watches were faced with a huge challenge by the growing popularity of digital LED & LCD displays of the seventies. Taking an older concept called the Jumping Hour or Direct Read (rotating discs with numbers printed on them instead of hands) and adapting it for watches like the Amida Digitrend with its reverse-reflected sideviewing LED imitation or the Sicura Instalite featured here. The Sicura was the first mechanical jump hour watch with a separate electric lighting function - batteries powered the lamp and manual winding for the watch. Pushing the top button lit up the display as well as three oddly placed portholes on the space-age case.
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