ZENITH CHRONOMASTER OPEN EL PRIMERO (HIGH FREQUENCY CHRONOGRAPH)

Switzerland (Swiss Made) 2006
Reference number: 03.0240.4021/21.C495; Movement: Legendary automatic calibre El Primero 4021 with a frequency of 36,000 vibrations/h (5 Hz) – extreme precision. Jewels: 39 rubies. Power reserve: 50 hours. Case: Noble stainless steel, diameter 40 mm. Dial: Black with a guilloché centre. Open Heart: View of the working balance wheel and escape wheel at the 10 o`clock position. Power Reserve: Power-reserve indicator at the 6 o`clock position. Crystal: Sapphire, domed, with double-sided anti-reflective coating. Case back: Transparent (sapphire), revealing the decorated movement and rotor. Accessories: Large luxury wooden case, leather mini-folder with identification details (Art/Mvt) and user manual. Condition A. In perfect condition without signs of wear, original crocodile strap.