[Discussion] Omega speedmaster pro w/ calibre 3861 power reserve lasts over 96 hours.

So my speedy power reserve lasts over 4 days. I went on vacation and last I wound it up was the morning I left. I just got back a few hours a go and decided to check my watch it was ticking and kept time this whole time as it was sitting in my drawer. Pretty amazing now I'm not so worried about winding it up every morning. I expected it to last at least 2.5 days but not over 4 while keeping constant with + 2.25/2.5 sec per day. I'm honestly amazed.