Patek Philippe ''Advanced Research'' Ref. 5750
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Patek Philippe ”Advanced Research” Ref. 5750

Reading Time: 9 minutes The engineers at Patek Philippe “Advanced Research” have extended the horizon of its chiming watches by developing a totally new all-mechanical sound amplifying system. This fortissimo “ff” module consists of a flexibly suspended sound lever and an oscillating wafer made of transparent sapphire-crystal glass. In comparison with conventional minute repeaters and […]