Santos Squelette watch, large model, manual winding mechanical movement 9612 MC. Black ADLC steel case, 7-sided crown with blue synthetic spinel, polished grey steel sword-shaped hands, sapphire crystal and back. Blue calf leather strap with black ADLC steel double adjustable folding clasp. Includes an additional black calf leather strap. QuickSwitch interchangeable strap system. Roman numeral skeletonized hour and minute hands with luminescent material. 138-piece individually numbered movement with 20 rubies. Movement dimensions: 28 mm x 28 mm, movement thickness: 3.97 mm, balance wheel: 28'800 vibrations/hour, approximately 72-hour power reserve. Case width: 39.7 mm, thickness: 9.08 mm. Water resistant to 10 bars (~100 meters).