The new moon phases calibres
E63.171 and E63.071
ETA is expanding its premium range by launching two slender quartz movement versions equipped with a moon phase function.
When a watch movement is being designed, the dimensions represent a constant challenge for the designer. What makes the E63.171 and E63.071 calibres stand out is this ultimate finesse. They contain a moon phase model which takes up just one millimetre of a total thickness of 2.95 millimetres.