Device for opening and closing waterproof watch cases Including: 2 chucks for cases with slots No 2835-A. 2 chucks for polygonal cases No 2835-B. 2 chucks for cases with holes No 2835-C. 2 chucks for grooved cases No 2835-D. 2 chucks for "Aquastar" cases No 2835-F. 2 chucks for cases with curved sides No 2835-E. 4 pairs of case-holding jaws, reversible, in special synthetic material, lug widths: 9-11, 13-15, 17-19, 20-22 mm. 1 Superior vice. 4 screws, to be fixed on the bench. Wooden stand: 250 x 95 mm. Total height: 300 mm. Ø of the hand wheel: 130 mm. Die-cast frame.