Not that big.... my wrist is too small!
But looking at it from the normal wrist angle it actually fits well.
The traditional Villeret case with the hunter case back has a nice curve at the case back and the leather strap also covers the gap between lugs. Clever design to make the watch look smaller than it is from the front.
That's why those with bigger wrists can even carry the 47mm Montblanc Villerets!
Cheers
Robin