Skip to content

We're Open 11AM - 5PM PST Daily until Christmas

Through Monday 2PM PST, December 23rd, all orders over $500 get upgraded to UPS Next Day shipping
** Carrier delays may apply

Topper will close at 3PM PST on Christmas Eve and will re-open on December 26th at 11AM. Happy Holidays!

Shopping Cart

Your cart is currently empty.

Welcome to Topper


How can we help?

From watch advice to jewelry design, our expert team is ready to assist you.

Zenith

Chronomaster Open

SKU: 03.3300.3604/69.M3300
  • $10,30000
  • ZENITH AUTHORIZED DEALER
  • TOPPER EXTENDED GUARANTEE

Marvel at the beating heart of the legendary El Primero

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 silver 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.

Specifications:

Movement

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

Functions

  • 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

Case

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

Strap

  • Strap: Metal bracelet

Email Order Form

Please fill out the form below and we will get in touch with you.