Zenith El Primero Port Royal Grande ref. 03.0550.4021

The Zenith Port Royal Open Grande ref. 03.0550.4021 features a striking brushed and polished stainless steel rectangular case with a black guilloché dial, bold Arabic numerals, and an open-heart display showcasing the high-frequency El Primero 4021 movement. Beating at 36,000 vph with a 45-hour power reserve, this in-house chronograph caliber is visible through both the dial cutout and sapphire exhibition caseback. Combining avant-garde design with technical mastery, the watch also includes a power reserve indicator and stands out among Zenith’s El Primero offerings for its unique and distinctive look.

This watch is in excellent condition, with only minor signs of wear from normal use. Surface scratches and small dings are visible on both the polished and brushed surfaces, but they could be easily removed with a light polish. There are a few specks of dust visible beneath the crystal. Additional photos are available on request.

This watch does not come with its original box or papers.

Brand: Zenith

Model: Port Royal

Reference: 03.0550.4021

Year: 2000s

Case size: 36mm

Lug-to-lug: 51mm

Case thickness: 14mm

Case material: Stainless steel

Dial color: Black

Movement: Zenith caliber El Primero 4021

Water resistance: 50 meters

Functions: Chronograph, power reserve indicator

Strap/bracelet: Aftermarket black leather strap

Lug width: 23mm