45mm... same size bezel- only difference is the color of the dial/bezel I own this watch, and in my opinion, the best looking fifty fathoms out there. The contrast of the gray with the rose (red) gold is truly stunning in person.
I just got this watch- stunningly beautiful time piece with a gorgeous exhibition case-back. Remarkable finishing. BlancPain is probably the most under-appreciated watch brand out there... considering its next level approach to watch-making.