I’ve had the AT “Skyfall” and “Spectre” models in the past. 38.5 mm is an ideal fit on my 6.5 inch wrist. 13 mm is getting up there in thickness for a watch of this case size. I agree that 10.5 mm would be an absolute home run. Unfortunately I feel Omega has lost their way a bit with case thickness on some of their more modern offerings. HOWEVER , the dial (especially) , case diameter and movement are so beautiful to look at , I’m considering adding one back, in blue of course! I’d also add they are relatively good value