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Zenith Chronomaster Open 03.3300.3604/21.M3300

Zenith Chronomaster Open

SKU: 03.3300.3604/21.M3300 

  • $10,300.00

  • Zenith Authorized Dealer
  • Topper Guarantee
  • Extended Warranty more info

The CHRONOMASTER Open offers a view of the beating heart of the El Primero movement from the dial. Crafted in a sleek 40mm steel case, this version features a matte black dial with tricolour counters and a transparent counter for the running seconds, paired with an integrated steel bracelet. Powered by the El Primero 3604 1/10th of a second automatic chronograph movement.



  • El Primero 3604 Automatic
  • Components: 269
  • Frequency: 36,000 VpH (5 Hz)
  • Power Reserve: approx. 60 hours


  • 1/10th of a second Chronograph:
    • - Central chronograph hand that makes one turn in 10 seconds
    • - 60-minute counter at 6 o'clock
    • - 60-second counter at 3 o'clock
  • Hours and minutes in the centre
  • Small seconds at 9 o'clock


  • Material: Stainless Steel
  • Diameter: 39.5 mm
  • Water Resistance: 10 ATM
  • Dial: Black matte with two different-coloured counters & a translucent polymer counter


  • Strap: Metal bracelet

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