Bergeon device for opening and closing waterproof watch cases. Die-case metal frame mounted on a wooden base. Includes the following accessories:
- Two chucks for cases with slots
- Two chucks for polygonal cases
- Two chucks for cases with holes
- Two chucks for grooved cases
- Two chucks for Aquastar cases
- Two chucks for cases with curved sides
- Four pairs of case-holding jaws, reversible (lug widths: 9–11, 12–15, 17–19, 20–22mm)