Zenith El Primero Chronomaster Open Stainless Steel / Black / Bracelet

Reference 03.3300.3604/21.M3300

About this watch

The Zenith Chronomaster Open is a stunning timepiece that perfectly marries style and function. From its rich heritage and reliable movement to its elegant design, it ticks all the boxes for anyone in search of a luxury watch. The round stainless steel case, measuring 39.50 mm, strikes the perfect balance between presence and wearability. The sunburst black dial adds a touch of depth, catching the light in a way that makes it utterly mesmerizing. The chronograph feature is where this watch truly shines, with its column wheel mechanism allowing for seamless starting, stopping, and resetting. With its 1/10th of a second automatic chronograph movement, this watch is a testament to Zenith's commitment to precision and innovation.
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Key Features

  • Zenith caliber El Primero 3604 movement
  • Stainless steel case with 39.50 mm diameter
  • Sapphire crystal glass for durability
  • 100 m water resistance for versatility
  • 60 hour power reserve for reliability
  • Column wheel chronograph mechanism for precision
  • Open base plate and bridges for transparency

Specifications

Brand
Zenith
Family
El Primero
Model
Chronomaster Open Stainless Steel / Black / Bracelet
Reference
03.3300.3604/21.M3300
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph, Column wheel
Case
Stainless Steel 39.5mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Panerai Luminor Chrono PAM00074 Titanium/Steel Zenith El Primero Movement 2002 (Full-Set/Serviced)

Panerai Luminor Chrono PAM00074 Titanium/Steel Zenith El Primero Movement 2002 (Full-Set/Serviced)

Panerai - PAM 00074 · $6,205
This exceptional Panerai Luminor Chronograph PAM 00074 represents a remarkable fusion of Italian design heritage and Swiss horological excellence. The 40mm titanium case showcases the distinctive Panerai aesthetic with its commanding cushion-shaped profile and signature crown-protecting bridge mechanism.

  • Condition: Honest wear consistent with careful ownership
  • Movement: Zenith El Primero automatic movement
  • Case material: Titanium
  • Bezel material: Polished steel
Posted at
May 27, 2026, 10:19 AM
Active
[WTS] Zenith El Primero Automatic Chronograph “TV Screen” — Ref. 0420.400 — Sharp Case — Neo-Vintage Rarity - Price: $ 2350 Free Shipping

Zenith El Primero Automatic Chronograph “TV Screen” — Ref. 0420.400 — Sharp Case — Neo-Vintage Rarity - Price: $ 2350 Free Shipping

Zenith - 0420.400 · $2,350
A rare and charismatic Zenith El Primero Ref. 0420.400 featuring the iconic rectangular 'TV Screen'-style case design.

  • Condition: Vintage good condition, lightly worn
  • Case size: ~36mm x 44mm
  • Diameter: 40-45mm diameter
Posted at
May 27, 2026, 9:02 AM
Active
[WTS] Brand New 2025 Zenith Chronomaster Original El Primero Chronograph Reverse Panda | 03.3200.3600/21.C903 | Price reduced

Brand New 2025 Zenith Chronomaster Original El Primero Chronograph Reverse Panda | 03.3200.3600/21.C903 | Price reduced

This is a brand new, discontinued Zenith Chronomaster Original Reverse Panda chronograph watch that comes with a full 2-year warranty and the original leather strap.

  • Condition: Brand new, never used
  • Material: leather
  • Strap type: deployant clasp
Posted at
May 25, 2026, 12:38 PM
Active
[WTS] Zenith Defy El Primero 21 Blue Dial 95.9002.9004/78.R584 – Box / Papers

Zenith Defy El Primero 21 Blue Dial 95.9002.9004/78.R584 – Box / Papers

The Zenith Defy El Primero reference 95.9002.9004/78.R584 is a modern Swiss watch blending cutting-edge design with the respected chronograph El Primero movement.

  • Condition: Excellent condition
  • Case size: 44mm
  • Case material: Titanium
  • Dial condition: Brand new condition
Posted at
May 23, 2026, 11:23 AM
Active
[WTS] Zenith Tipo CP-2 Chronograph 03.2240.4069, Underrated El Primero Beast (641/1000)

Zenith Tipo CP-2 Chronograph 03.2240.4069, Underrated El Primero Beast (641/1000)

Zenith - 03.2240.4069 · $4,150
The Zenith Tipo CP-2 Chronograph is a vintage-style chronograph inspired by military designs, featuring a matte black dial and bold lume markers.

  • Condition: Great condition, showing only light signs of normal wear
  • Case size: 43mm diameter
  • Movement: Zenith El Primero Cal. 4069
  • Power reserve: 50 hour power reserve
Posted at
May 22, 2026, 8:29 PM
Active
[WTS][US] Zenith El Primero Chronomaster Sport - White Dial - 41mm - 03.3100.3600/69.M3100 - Full Set

[US] Zenith El Primero Chronomaster Sport - White Dial - 41mm - 03.3100.3600/69.M3100 - Full Set

A Zenith El Primero Chronomaster Sport is being sold for a good mechanical timepiece in excellent shape.

  • Condition: Fantastic condition with few hairlines on clasp, case, and bracelet
  • Case Size: 41mm diameter
Posted at
May 21, 2026, 6:24 AM
Active
[WTS] Zenith | 96.2260.4061/21.R575 | Rolling Stones Edition El Primero | $5,750

Zenith | 96.2260.4061/21.R575 | Rolling Stones Edition El Primero | $5,750

This is a limited edition Zenith El Primero 'Tribute to Rolling Stones' watch in preowned condition, featuring a clean crystal and unknown service history.

  • Condition: preowned clean condition with minor hairline scratches
  • Service History: unknown
  • Shipping: FREE 2 Day Insured FedEx Shipping
  • Returns: NO RETURNS
Posted at
May 21, 2026, 12:04 AM
Active
[WTS] Two Grand Seiкos Walk Into a Bar and Brought Excellent Friends — GS GMT, GS Spring Drive, Zenith El Primero, Piaget, ML Aikon Ti Purple, + Indie

Two Grand Seiкos Walk Into a Bar and Brought Excellent Friends — GS GMT, GS Spring Drive, Zenith El Primero, Piaget, ML Aikon Ti Purple, + Indie

Grand Seiko - SBGM253 · $4,650
Limited Edition, "Mt. Iwate" Grand Seiko GMT with a stunning light blue dial that shifts beautifully in different lighting.

  • Condition: Mint
  • Diameter: 42mm
  • Case material: Stainless Steel
  • Bracelet material: Stainless Steel
Posted at
May 20, 2026, 8:13 PM
Active