Technology & Innovation
Neo Constant Escapement — 14‑Micron Silicon Blade and the Purple “Butterfly” in Girard‑Perregaux
The Neo Constant Escapement uses a 14‑micron‑wide, 120‑micron‑thick silicon blade instead of a coiled hairspring. Fratello’s hands‑on frames that purple ‘butterfly’ as the visible heart of GP’s effort to tame fluctuating power delivery.
By HorologyTalk Editorial · · 3 min read
Originally reported by Fratello Watches – The Magazine Dedicated To Luxury Watches. This article is a curated summary of their original coverage.
14 microns at the center
14 microns wide and 120 microns thick: that is the silicon blade Girard‑Perregaux has fitted in the Neo Constant Escapement in place of a traditional coiled balance spring. The change is not cosmetic. GP’s aim is explicit — to overcome fluctuating power delivery and deliver consistently superior precision.
Why swap the hairspring?
GP replaces the conventional balance spring with a silicon blade because the blade can behave differently under varying torque. The blade’s geometry and material properties are intended to provide a more stable impulse across the mainspring’s discharge curve, addressing the age‑old problem of variable amplitude and rate as the movement winds down.
The purple 'butterfly' you can see
Fratello Watches — The Magazine Dedicated To Luxury Watches first reported the hands‑on look at the mechanism. The silicon element is visible and has been nicknamed the purple “butterfly” in the report. It’s not an ornament; in the Neo Constant layout that purple silhouette is the functional center of the escapement’s constant‑force strategy.
Material and manufacture
Silicon makes sense here because it can be micromachined to very thin, precise dimensions and is impervious to magnetism and fatigue modes that affect metal springs. GP’s solution leans on those attributes: the blade’s quoted cross section is part of the technical pitch, showing how fine tolerances and material choice replace decades‑old spring geometry.
What this means for buyers and the market
The Neo Constant Escapement reads like a reminder that constant‑force research is still active and visible. If the mechanism translates to stable on‑wrist rates and reliable servicing, expect other marques to take note. For now, the purple blade is both a technical answer and a visual calling card for GP’s approach.
Open question worth watching: will the silicon blade, when exposed to long‑term wear and real‑world servicing cycles, deliver the durability claims as cleanly as it demonstrates in the showroom? That will decide whether the purple ‘butterfly’ becomes a niche highlight or a new standard.
Originally reported by Fratello Watches – The Magazine Dedicated To Luxury Watches. This article is a curated summary of their original coverage.
Tags: Girard-Perregaux, constant escapement, silicon, Neo Constant Escapement