Vulcain
Vulcain has 5 watches in the database across 2 model families. Lug-to-lug runs from 44.5 mm to 44.5 mm, with a median of 44.5 mm, alongside case diameters of 38 mm and thickness of 12.2 mm.
100% of them sit in the balanced range on a 6.5-inch wrist.
The most documented family is Skindiver Nautique (4).