3 years with the first protos of RAE-3 wristwatch

The first prototypes are now three years old. They were cranked up recently and tested on how they are doing... And they were just fine, simply said. Especially considering that they have been tested more rigorously than they would be used in real life. Worth mentioning is that the performance of the movements have not much changed during their time of idle existence.

The first protos have exactly the same movement as the ones now used in RAE-3 watches. There are four protos and they have been sitting on a shelf most of the time. Altogether they have been in use for some months. When they were received they were in use for a couple of months. After this they have been cranked up a couple of times.

The watches were timed with graph lying on their backs and sideways. Also they were kept running, timed manually and kept running from fully wound to stop.

Observations would be that the Miyota 9122 movements of the protos are still performing nicely within what Miyota promises. Little performance variation exists even with the same watch when measured, but these variations don't change the overall observation results. Also these sort of variations you can expect from mechanical movements.

Excellent running times from fully wound to stop.

Tests were done with a simple timegraph and comparing manually the times against quartz movement watch. These tests should not be considered to be any kind of official study.