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This Mechanical Watch Has a “Butterfly” Inside: The Girard-Perregaux Neo Constant Escapement Fratello
This Mechanical Watch Has a “Butterfly” Inside: The Girard-Perregaux Neo Constant Escapement
Fratello ·
What happens when you replace a traditional coiled balance spring with a 14-micron-wide silicon blade? Girard-Perregaux set out to answer that question with the Neo Constant Escapement.