Thrusday - February 6th - Morning check at 10:00 AM local time 120 hours since start. Full wind after checking.
Watch was put to rest yesterday night with dial up.
This morning check shows a gain of one aditional second. So the watch accumulates a total deviation of two seconds gain during the first 120 hours of test.
It also shows influence of position of watch dial up (gain) or dial down (loss) . In any case I am positively surprised for the precision of this watch.
It´s only drawback is the hardness of its crown for winding it. It is the hardest among all my modern Speedies. It is a true pain for the fingers to wind!
Experience tells that this hardness disminishes as the watch is used many times, probably as the gaskets around stem get worn by winding.
All the best, Abel.