Swiss Made, mechanical cronograph self winding movement Valjoux 7750, 25 rubies. ball bearing rotor , 28.800 vibrations per hour, quick date and week day change, stop device. Regulator system ETACHROM and regulator corrector, INCABLOC anti shock system , 42 hours power reserve, anti-magnetism, Stainless Steel case 316L, luminous dial Superluminova , water resistant 50 mts./ 5 ATM, Sapphire crystal, 42 mm, leather band