Zenith · Chronomaster Sport

Strap for Chronomaster Sport Rose Gold / Black / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm

20 mm straps All Zenith

Lug width20 mm

Case diameter41 mm

Reference18.3101.3600/21.M3100

FamilyChronomaster Sport

MovementZenith caliber El Primero 3600 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel

CaseRose Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

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Straps for the Chronomaster Sport 18.3101.3600/21.M3100

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Chronomaster Sport 18.3101.3600/21.M3100, seen from the bench

The Zenith Chronomaster Sport 18.3101.3600/21.M3100 in rose gold evolves the legendary El Primero, history's first automatic chronograph from 1969. Powered by the El Primero 3600 caliber beating at 10 Hz for centesimal precision, this 41mm rose gold case with 20mm lug width combines bicolor ceramic bezel, column-wheel chronograph mechanism, and 50+ hour power reserve. The refined construction, visible through the sapphire caseback, includes anti-reflective crystal, screw-down crown rated to 100m water resistance, and 5N rose gold case resistant to oxidation.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only