Quick question, my cousin and I both purchased an received new watches recently, a Stowa Seatime and a Doxa Sub750T. While discussing them at lunch on Monday, we synchronized them to exact same time (atomic time).
Now here's the part I find strange, my watch over the past 5 days has gained about 15sec on the world clock, yet the Stowa and the Seatime remain within .5 sec of each other. Odder yet, each day when we check they are insanely close. In other words, neither seems to fluctuate from the other.
Is this typical? I understand they both use the same movement.
Edit: I should add that he and I have very different activity levels.