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Zenith Chronomaster El Primero Open, reference 03.3300.3604/21.M3300, photo 1
Zenith Chronomaster El Primero Open, reference 03.3300.3604/21.M3300, photo 2
Zenith Chronomaster El Primero Open, reference 03.3300.3604/21.M3300, photo 3
Zenith Chronomaster El Primero Open, reference 03.3300.3604/21.M3300, photo 4
Zenith

Zenith Chronomaster El Primero Open Reference 03.3300.3604/21.M3300

Black dial · Steel bracelet · 39.5 mm

Item WFYXU7UGG

NewOriginal papersOriginal boxYear: 2026

Condition

New
Brand new and never worn, as supplied.
Unworn
Never worn. It may have been stored or displayed, but shows no signs of use.
Very good
Lightly worn with at most very faint signs of use; close to new.
Good
Worn, with visible but normal signs of use for its age.

Manufacturer price $12,275

$6,805
  • Card, Apple Pay or Google Pay on Stripe’s secure checkout, no card feePayPal, or a card through PayPal, on PayPal’s secure checkout, no feeWe confirm the watch is available, then send you the payment details · How to pay

In stock · processing at least 24 hours · free US delivery in 1–3 business days

To the FedEx location nearest you, collected with photo ID: the watch never waits on a doorstep.

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Case
39.5 mm · Stainless Steel
Movement
Automatic · El Primero 3604
Dial
Black
Water resistance
100 m

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What’s included

  • Original box
  • Original papers (2026)
  • 24-month Watchflix NYC warranty
  • Secure checkout by Stripe: Visa, Mastercard, American Express, Apple Pay, Google Pay. We never see your card details.
  • Secure checkout by PayPal: your PayPal account or a card. We never see your payment details.
  • Authenticated by the Watchflix NYC specialist before it ships · How we check
  • Free, fully insured US delivery to the FedEx location nearest you in 1–3 business days. You collect it with a photo ID matching the order, so the watch never waits on a doorstep. · Shipping
  • Outside the United States? Message us on WhatsApp first and we confirm delivery to your country, the cost and the time. Import duties and taxes are charged by your country's customs when the watch arrives. They are not included in our prices and are paid by the buyer.
  • 14-day returns, with no restocking fee · Refund policy
  • Watchflix LA · 5.0 on Google from 480 reviews · Read reviews
  • Want to see this exact watch? Ask us on WhatsApp for live photos before you buy. · Ask for photos

Specifications

Overview

Brand
Zenith
Reference
03.3300.3604/21.M3300
Year
2026
Condition
New
Made for
Men's
Original box
Yes
Original papers
Yes

Case and dial

Material
Stainless Steel
Diameter
39.5 mm
Dial
Black
Crystal
Sapphire Crystal
Water resistance
100 m

Movement

Movement
Automatic
Caliber
El Primero 3604
Power reserve
60 h
Frequency
36,000 vibrations per hour
Functions
Small seconds, Chronograph

Bracelet

Bracelet or strap
Stainless Steel
Clasp
Folding Clasp
Clasp material
Stainless Steel

Features

Additional features
Luminous Indices, Luminous Hands, Screw-Down Crown

New to Zenith? Read our Zenith buying guide

Description

The Zenith Chronomaster El Primero Open (reference 03.3300.3604/21.M3300) is a 39.5 mm stainless steel watch with a black dial on a stainless steel bracelet.

It is listed at $6,805 at Watchflix NYC, in stock in the US.

It is powered by an automatic movement, caliber El Primero 3604, with 60 hours of power reserve. Functions: small seconds and chronograph. Details: luminous indices, luminous hands and screw-down crown. Water resistant to 100 m.

Condition: new, 2026. Supplied with the original box and papers.

Checked by our specialist before it ships, and delivered fully insured.

About the Zenith Chronomaster

The Chronomaster is home to Zenith's El Primero, introduced in 1969 as one of the first automatic chronograph movements, beating at 36,000 vibrations an hour.

Recent Chronomaster Sport and Original models measure tenths of a second; the reference tells you the generation and movement.

We stock 101 Zenith Chronomaster watches, from $3,915 to $33,510.

Guides for this Chronomaster

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