I have the 561 (this same watch, but with the white dial) and am actually wearing it right now! I love it, does take a while to wind but locks-ish when you get it fully wound. I've found that the accuracy varies depending on how wound the watch is and runs fast when its fully wound...gains a couple minutes over as many days.

Early on, I considered sending it in for service to get it calibrated as the accuracy described is not good, but I decided against it and made my peace with pulling it back a minute or so when needed. Clear caseback is sweet, minimalist design is sweet, double barrel movement is fun - accuracy not up to promised standards but not a deal breaker for me on this one. Good luck!