Another idea is to invest in the Diver Pro Runner/ deployment clasp combo.
This is a more expensive option, but the upgrade to one of the best deployment clasps on rubber...is amazing.
There are two pieces that can be adjusted.
NOTE: I have a 7 inch wrist, the two pieces are cut so I can the pieces so I adjust the clasp as needed to fit...tighter...looser.
Here are the rubber pieces that can be trimmed:
Attachment:
ImageUploadedByTapatalk1414850922.828588.jpg
Here is the deployment clasp
Attachment:
ImageUploadedByTapatalk1414850909.513138.jpg
The two together are about $425 brand new.
Not cheap, but if you want the look of Breitling Diver Pro III, Ocean Racer and the Pro II this is leaps and bounds above the regular diver straps.
And for you, it will absolutely fit your wrist!