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The Swiss Official Chronometer Testing Office (COSC) is an official and independent
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submitted to its scrutiny. For a full 384 hours, the precision of mechanical movements
seconds per day for calibres with a diameter of 20 mm and above, and between -5 and
is put to stern trial in five positions and at three different temperatures. Whatever the
receive a chronometer rating certificate that represents a privilege earned by only 3%
“ Swiss Calibration Service ” lab. In compliance with the ISO 3159 standard, each of
Officiels de contrôle (Official watch rating centres) and located in Bienne, Le Locle
precision of watch movements. It currently has three laboratories known as Bureau
them applies a 16-day program of exhaustive and individual tests to all the calibres
+8 seconds for smaller calibres. Movements meeting the imposed precision criteria
conditions, they must meet a level of precision falling within the range of -4 to +6
not-for-profit public-interest organisation. Its mission is to measure and test the
and St-Imier. Each of them is accredited by the Swiss Accreditation Service as a
Chronometer certification

of the Swiss watch production. All movements driving the Classic Racing watches are chronometer-certified by the COSC.

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In-house movements Acquired in 2007 by Chopard as part of its global strategy of vertical integration, the Manufacture Fleurier Ebauches is pursuing a simple goal: to produce 15,000 mechanical movements per year from 2015 for the entire range of Chopard collections, apart from the Haute Horlogerie collection produced by Chopard Manufacture. The entirely ren
KEY FEATURES

Calibres