Originally Posted by
walkerwek1958
OK, let me tell you why some watches perform to 2 secs/ day and some only do 10 secs/ day, forget about the horological differences, it’s all down to how well regulated the watch is. Trust me, I don’t make this up, the better movement should show better precision but the overall accuracy is down to how well the watch is regulated.
Why does my 16 year old non COSC rated Omega Speedy Reduced 3510:50 run at +0.3secs/ day ( gained 2 secs over 7 days wear)..........because it’s been serviced recently by me and regulated carefully. Why did the last Rolex I owned gain 6-7secs/day despite being only 3 years old...... because it would've benefitted from a dose of regulation.
I like watches to keep good time even if they’re 50+ years old, I’m currently wearing a 1967 Constellation that’s gained 2 secs in 24 hrs and runs consistently around that point.
Being able to fix my own helps a lot, if I couldn’t I’d be v. frustrated.