The LW.01M and LW.01A are powered by a ETA 2000.M1 modified by Schwarz-Etienne for MING, which were picked with an attempt to make a thin watch for the brand's fourth anniversary. That idea morphed into a challenge to make a light watch, then the lightest, but all that was delayed with a years-long years exhaustive amount of testing and metallurgic experimentation.
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