I never would have believed it if I didn't witness it myself. I started timing my newly acquired Sub about 10 days ago. I've been checking it daily and it's still accurate to the second. That's right. It hasn't gained or lost 1 second in the last 10 days. Amazing!!
No matter what time it is when I check, it's dead on. I've been wearing it every day during waking hours and off during sleep. There's no particular way I put it down. It's usually on it's side -- crown up or down depending on how I'm holding it after I take it off -- it's random.
All my other watches are within COSC standards, usually gaining a couple of seconds a day. I never expected the sub to be so accurate and it's very rare that I time my watches -- now I just want to see how long this will last. Oh well, I guess I have to keep on wearing it.
