Posted on May 27, 2013
The majority of watchmakers don’t have their own in-house movements. They usually purchase their movements from ETA, Citizen and other firms. This became common after the popularity of quartz powered watches in the seventies and eighties when everyone wanted a quartz watch for their unparalleled precision, reliability and affordable pricing, forcing the surviving watchmakers to start buying movements rather than developing their own.
Two of the most popular watch movements found today in several watch brands are the Swiss ETA 2824-2 and the Miyota Cal 821a. Both are excellent movements and provide accurate and reliable mechanics for your popular timepieces. We see the ETA 2824-2 movement in many watch brands such as, a.b.art, Altanus, Cartier, Junkers, LACO, Maurice Lacroix, TAG Heuer, Tissot and Zeppelin. While the Miyota movement is common in lower priced watches (around $500 or less) from Junkers, Invicta, LACO, and many others.
These two movements are very similar, but have some significant differences:
The ETA 2824-2 movement comes in with factory direct second hand drive meaning that the second hand will not stop for moments at a time due to wrist movements.
The Miyota 821a comes with an indirect drive second hand, which causes the second hand to “pause” due to strong wrist movements. The “pause” is caused by the small play within the teeth of the third wheel in the train that turns the second hand, in average the maximum amount of play equates to 2 seconds “pause” but usually the movement will “pause” for less time. This is again an aesthetic issue, since the indirect second hand drive won’t affect the accuracy of the watch.