Fig 4 – Arrow indicating how to let down the power Servicing these watches should be straight forward for any watchmaker. This watch requires both and is marked with an arrow indicating you must loosen the screw and another pointing to the button to release the spring tension. Most watches require you to either turn a screw or depress a button. Also, the double release for the winding stem (a feature exceedingly rare in watchmaking) is also well marked. The click is clearly labeled with an arrow. For example, with two barrels it can be more difficult than normal to figure out how to release the power stored by the mainsprings before servicing the watch. Anything that is out of the ordinary is clearly marked to aid the watchmaker in his service. The watch comes apart and goes together easily.

Often brands don’t think about what will happen when the watch needs to be serviced, but in this case, it is apparent that the needs of the watchmaker were considered. From the watchmaker’s perspective, it even looks like they designed the caliber 400 with after-sales service in mind.

The oris aquis date calibre 400