Hoping someone could help that's has experienced this. My Sinn 104 which I've had since June of 2018 has been running about-0/+0.5 up to +1 2 for months. I literally check the watches accuracy every day since I put it on my wrist. Needless to say I've been thrilled with the Sinn.
With this being said, I decided to purchase the Seiko "Baby Turtle". Wanted a less expensive watch to wear daily and figured why not a Seiko.
For the first time in months I'm not wearing my Sinn and over night its lost an hour of time.
Someone please help. This to me is just crazy.