One full week on my wrist...
I monitered it and checked its accuracy.
Difficult to say as you don't have minute indexes, but I would say less than 30 secs a week.
Amazing, for a 7 Days PR watch. even if the JLC Septantieme works even a bit better.
Now, the interesting thing ill be to see how it performs in the next day or two.
Best my friend.
Nicolas.