The Chronoswiss Opus is a skeleton chronograph with base ETA 7750, lever movement, small second hand. Chronograph with 30 min. and 12 hour registers, self-winding mechanism with ball bearing. Fine trimming setting, stop second, polished lever, escape wheel and screws, "fousses-côtes" decoration. Blocking lever of steel, gold plate skeleton rotor. Solid 24-section case, scratchproof sapphire crystal, screw on bezel, mineral glass back, water-resistant to a depth of 30 meters, screw-on strap attachment, individually numbered. Measurements: à 30.00mm, 13¼", Height 7.90mm. A/h: 28,800 vibrations; Jewels: 25. Balance: Glucydur with Nivarox I hairspring. Shock absorber: Incabloc. |