[klodolph]

According to the linked thread, the Seiko 5 is an order of magnitude worse… 5 seconds per day, versus 15 seconds per month for a quartz watch.

[Maursault]

This one?

     After observing Seiko 5 SNK809 for 35 days, I can say I´m happy with accuracy.

     Overall, it has lost 25 seconds during this time.
     It lost most of it when it was sitting on table 2 times during observation. When kept on wrist, it hardly lost any...