Barnaby'sDad
Contributor
Seiko is up front about the expected accuracy of watches with the 7S26 movement and your watch appears to be falling within expectations. Somehow it seems unlikely that Seiko is going to do a warranty repair on a watch that is performing to specification. If you want more accuracy and don’t want to spend much go buy a quartz watch. Or go get mechanical watch with a better movement like a Seiko 6R15 or Swiss diver with a ETA 2824 or Selita. The SKX007 is great watch at it’s price point. Spending time to set it once or twice a week is a feature and not a bug.
Some days it's a novelty. Other days it's a nuisance. I assumed that -20 to +40 accuracy would mean somewhere in the middle (or one extreme or the other over the course of time) based on how it's getting worn. Not gaining close to a minute every day consistently. I guess that's what I get for assuming.