Zenith - Chronomaster Open - 18.3300.3604 - Men - 2020+






Over 25 years’ experience specialising in premium and modern watches internationally.
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Zenith Chronomaster Open, reference 18.3300.3604, in 18k rose gold with a 40 mm automatic case, 'Open' silver sunburst dial, and blue alligator leather strap, includes original box, papers and warranty.
Description from the seller
Brand new / Excellent condition Zenith Chronomaster Open
This exceptional high-horology chronograph, introduced in 2022, reinterprets Zenith’s iconic “Open” concept first launched in 2003. Crafted in 18k rose gold, it combines contemporary elegance with the brand’s legendary high-frequency chronograph technology capable of measuring 1/10th of a second with remarkable precision.
Comes in excellent condition, fully inspected and perfectly functioning.
Includes original box and papers (if available) and warranty.
Zenith is a prestigious Swiss watchmaker renowned for its pioneering spirit in high-frequency chronograph movements. Best known for the legendary El Primero caliber, the brand has built a strong reputation for precision, innovation, and technical excellence in mechanical watchmaking.
Model: Chronomaster Open
Reference: 18.3300.3604
Brand: Zenith
Collection: Chronomaster
Case:
Diameter: 39.5 mm
Thickness: 13.1 mm
Material: 18k rose gold (polished and satin-brushed finish)
Crystal: Domed sapphire crystal with double anti-reflective coating
Caseback: Sapphire exhibition caseback (showing star-shaped rotor and movement)
Water resistance: 100 m / 10 ATM
Dial:
Color: Silver sunburst dial
Signature “Open” design with aperture between 9 and 11 o’clock revealing the escapement
Transparent hesalite-style grey sub-segment for small seconds integration
Iconic tri-color chronograph counters:
Blue 60-second counter at 3 o’clock
Anthracite 60-minute counter at 6 o’clock
Rose gold applied hands and indexes with Super-LumiNova
Movement: Zenith El Primero 3604
Type: Automatic high-frequency chronograph
Frequency: 36,000 vph (5 Hz)
Precision: measures 1/10th of a second (10-second full chronograph sweep)
Column wheel chronograph architecture
Silicon escapement components (anti-magnetic, low friction)
Power reserve: approx. 60 hours
Bracelet:
Material: Matte dark blue alligator leather strap with rubber lining
Clasp: 18k rose gold pin buckle, engraved with Zenith’s star logo, offering a more classic, lightweight and elegant alternative to a folding clasp
Shipping:
Secure and insured worldwide shipping
Carefully packaged for maximum protection
Dispatch from Switzerland / EU shipping available
Please check your local customs regulations for international orders.
Seller's Story
Brand new / Excellent condition Zenith Chronomaster Open
This exceptional high-horology chronograph, introduced in 2022, reinterprets Zenith’s iconic “Open” concept first launched in 2003. Crafted in 18k rose gold, it combines contemporary elegance with the brand’s legendary high-frequency chronograph technology capable of measuring 1/10th of a second with remarkable precision.
Comes in excellent condition, fully inspected and perfectly functioning.
Includes original box and papers (if available) and warranty.
Zenith is a prestigious Swiss watchmaker renowned for its pioneering spirit in high-frequency chronograph movements. Best known for the legendary El Primero caliber, the brand has built a strong reputation for precision, innovation, and technical excellence in mechanical watchmaking.
Model: Chronomaster Open
Reference: 18.3300.3604
Brand: Zenith
Collection: Chronomaster
Case:
Diameter: 39.5 mm
Thickness: 13.1 mm
Material: 18k rose gold (polished and satin-brushed finish)
Crystal: Domed sapphire crystal with double anti-reflective coating
Caseback: Sapphire exhibition caseback (showing star-shaped rotor and movement)
Water resistance: 100 m / 10 ATM
Dial:
Color: Silver sunburst dial
Signature “Open” design with aperture between 9 and 11 o’clock revealing the escapement
Transparent hesalite-style grey sub-segment for small seconds integration
Iconic tri-color chronograph counters:
Blue 60-second counter at 3 o’clock
Anthracite 60-minute counter at 6 o’clock
Rose gold applied hands and indexes with Super-LumiNova
Movement: Zenith El Primero 3604
Type: Automatic high-frequency chronograph
Frequency: 36,000 vph (5 Hz)
Precision: measures 1/10th of a second (10-second full chronograph sweep)
Column wheel chronograph architecture
Silicon escapement components (anti-magnetic, low friction)
Power reserve: approx. 60 hours
Bracelet:
Material: Matte dark blue alligator leather strap with rubber lining
Clasp: 18k rose gold pin buckle, engraved with Zenith’s star logo, offering a more classic, lightweight and elegant alternative to a folding clasp
Shipping:
Secure and insured worldwide shipping
Carefully packaged for maximum protection
Dispatch from Switzerland / EU shipping available
Please check your local customs regulations for international orders.
