Zenith El Primero Chronomaster Open Stainless Steel / Blue / Boutique Edition

Reference 03.3300.3604/51.M3300

Zenith Chronomaster Open Stainless Steel / Blue / Boutique Edition

About this watch

The Zenith Chronomaster Open Stainless Steel / Blue / Boutique Edition is a masterpiece that embodies innovation and tradition. Its stunning blue dial with sunburst finish catches the light beautifully, giving it a dynamic look that changes with your movement. The round stainless steel case measures 39.50 mm in diameter, offering a perfect balance of presence without being overly bulky. The open-heart design allows you to peek into the intricate workings of the watch, making it not just a timekeeper, but a conversation starter. With a water resistance of 100 meters, this watch is built to withstand the elements. At its core lies the Zenith caliber El Primero 3604, an automatic chronograph movement that measures time to a precision of 1/10th of a second and features a power reserve of up to 60 hours. The stainless steel case adds durability while enhancing the overall aesthetic, complemented by sapphire crystal glass that ensures scratch-resistance. Wearing the Chronomaster Open is an experience in itself, striking a perfect balance for most wrists with its comfortable fit. Whether dressing up or going casual, this watch complements any outfit due to its versatility and excellent after-sales service offered by Zenith.
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Key Features

  • Automatic chronograph movement (El Primero 3604)
  • Water resistance of 100 meters
  • Stainless steel case with sapphire crystal glass
  • Open-heart design for intricate workings visibility
  • Power reserve of up to 60 hours
  • Frequency of 36,000 vibrations per hour
  • Lubricant-free silicon escapement

Specifications

Brand
Zenith
Family
El Primero
Model
Chronomaster Open Stainless Steel / Blue / Boutique Edition
Reference
03.3300.3604/51.M3300
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph, Column wheel
Case
Stainless Steel 39.5mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Zenith Chronomaster Original “El Primero” 38mm, OEM Deployant Strap & New OEM Bracelet

Zenith Chronomaster Original “El Primero” 38mm, OEM Deployant Strap & New OEM Bracelet

Zenith - 03.3200.3600/69.C902 · $7,250
A 2023 Zenith Chronomaster Original 'El Primero' 38mm watch on a blue leather deployant strap, with an included OEM steel bracelet.

  • Condition: Like new
  • Bracelet type: OEM steel integrated
  • Strap type: Zenith blue leather deployant
Posted at
Feb 5, 2026, 8:29 PM
Active
View listing on r/WatchExchange
[WTS] Zenith - 49.9010.9004/01.R947 Defy El Primero 21 Chroma 🎨 limited to 200 pieces

Zenith - 49.9010.9004/01.R947 Defy El Primero 21 Chroma 🎨 limited to 200 pieces

Zenith - 49.9010.9004/01.R947 · $10,500
This listing is for a Zenith Defy El Primero 21 Chroma limited to 200 pieces, which is a complete set from 2022.

  • Condition: Mint condition
  • Year: 2022
  • Quantity Produced: limited to 200 pieces
Posted at
Feb 5, 2026, 1:22 PM
Active
View listing on r/WatchExchange
[WTS] 2017 Zenith Chronomaster El Primero "Open Heart" 03.2040.4061/23.C496 - Box/Papers, Two Straps, Excellent Shape

2017 Zenith Chronomaster El Primero "Open Heart" 03.2040.4061/23.C496 - Box/Papers, Two Straps, Excellent Shape

Zenith - 03.2040.4061/23.C496 · $5,999
The Zenith Chronomaster El Primero 'Open Heart' is a striking example of an open heart masterpiece, highlighting the legendary El Primero movement through an open-heart aperture on the dial.

  • Condition: Excellent pre-owned condition
  • Case Size: 42mm
  • Movement Power Reserve: ~50-hour
  • Water Resistance: 100m depth rating
Posted at
Feb 5, 2026, 12:37 AM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero Chronograph - Serviced w/Extras

Zenith El Primero Chronograph - Serviced w/Extras

Zenith - 20-0010.420 · $3,350
A Zenith El Primero Chronograph with a gold filled case and 38mm diameter, featuring the Cal.420 movement.

  • Case diameter: 38mm
  • Lug width: 20mm
  • Lug to lug: 45mm
Posted at
Feb 2, 2026, 10:26 AM
Active
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[WTS] Zenith Defy 21 Chroma El Primero (2022) – Ceramic – Full Set – Limited 200 €6950

Zenith Defy 21 Chroma El Primero (2022) – Ceramic – Full Set – Limited 200 €6950

Zenith - 49.9010.9004/01.R947 · $6,950
A 2022 Zenith Defy 21 Chroma El Primero with a ceramic case and limited to only 200 pieces worldwide. It's powered by the legendary El Primero chronograph movement and features an original retail price north of €14,000.

  • Condition: Excellent with minor cosmetic wear on the case near the lugs
  • Case material: Ceramic
  • Movement type: El Primero chronograph
  • Water resistance depth: 100m
Posted at
Feb 2, 2026, 6:19 AM
Active
View listing on r/WatchExchange
[WTS][US] Zenith El Primero Chronomaster Sport - Meteorite Dial - 42mm - 03.3120.3600/76.M3100 - Full Set

[US] Zenith El Primero Chronomaster Sport - Meteorite Dial - 42mm - 03.3120.3600/76.M3100 - Full Set

Zenith - 03.3120.3600/76.M3100 · $13,300
Up for sale is a Zenith El Primero Chronomaster Sport - Meteorite Dial - 42mm Watch functions perfectly mechanically, without issue.

  • Condition: Fantastic condition with minor hairlines
  • Water Resistance: 30m
  • Case Size: 42mm diameter
  • Band Material: bracelet
Posted at
Jan 27, 2026, 8:00 AM
Active
View listing on r/WatchExchange
[WTS] Brand New Zenith Chronomaster Original Reverse Panda El Primero Chronograph | 03.3200.3600/21.C903 | Full Zenith warranty | Price reduced

Brand New Zenith Chronomaster Original Reverse Panda El Primero Chronograph | 03.3200.3600/21.C903 | Full Zenith warranty | Price reduced

Zenith - 03.3200.3600/21.C903 · $7,150
A brand new Zenith Chronomaster Original Reverse Panda El Primero chronograph, discontinued by the manufacturer, still in its protective stickers and under full warranty.

  • Condition: Brand new, never used
  • Warranty: 2-year warranty from Zenith
  • Strap: Original leather strap with deployant clasp
Posted at
Jan 25, 2026, 4:06 PM
Active
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[WTS] Zenith El Primero Defy Extreme Diver AKA PURE WRIST JOY Ref 95.9601.3620/51.I301 FULL SET

Zenith El Primero Defy Extreme Diver AKA PURE WRIST JOY Ref 95.9601.3620/51.I301 FULL SET

Zenith - 95.9601.3620/51.I301 · $7,950
A Zenith El Primero Defy Extreme Diver with a unique blue starry sunray pattern dial and a titanium case.

  • Condition: Pre-owned, barely over a year old
  • Case size: 42.5MM diameter
  • Movement: El Primero cal 3620 CS automatic movement
Posted at
Jan 24, 2026, 7:53 PM
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Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

Zenith - 03.2040.4061/69.C496 · $4,950
A Zenith El Primero Chronomaster Open Heart chronograph watch, featuring a 42mm stainless steel case and in-house Caliber Zenith El Primero 4061 movement. The watch is dated October 2014 and has been recently serviced by Zenith.

  • Condition: Mint Condition with light hairline scratches only
  • Case size: 42mm diameter
  • Water resistance: 30m depth rating
Posted at
Mar 31, 2025, 1:26 PM
Active
View listing on RolexForums