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Self regulation using positional variance at rest is a great way to keep a watch super accurate, offsetting deviation when worn with opposite deviation at rest. I ran a test over 10 days with my 2020 Sub41 and reached a total deviation of 0.2s after 10 days, or an average of 0.02 s/d. Positive variance in horizontal dial up at rest would compensate for negative variance when worn.
Never achieved that kind of accuracy with a mechanical watch before, not even with Omega's latest METAS movement. Felt surreal.
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