Hi Mark
The total thickness of Elite Ultran Thin is 7.60mm. That's the reason for a small diameter crown, I guessed its about 4.5mm.
For winding it is no issue. As the movement is auto Elite 681, just a quick twenty to thirty turns will give it sufficient power and then let the auto mechanism takes over.
Thanks for viewing.
Just seen some 2011 Collections, uploading next few days.
Kong