Zenith · Chronomaster Sport

Strap for Chronomaster Sport Stainless Steel / Boutique Edition

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

Reference03.3103.3600/69.M3100

FamilyChronomaster Sport

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

CaseCeramic, Stainless Steel

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 03.3103.3600/69.M3100

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Chronomaster Sport 03.3103.3600/69.M3100, seen from the bench

The Zenith Chronomaster Sport, reference 03.3103.3600/69.M3100, evolves a chronographic legacy dating to 1969 when the El Primero calibre revolutionized timekeeping at 36,000 beats per second. This 41mm stainless steel and hi-tech ceramic case embodies pure sporting geometry without ornamental excess. The automatic El Primero 3600 movement operates at 1/10-second frequency, a rarity in modern chronographs, with tenth-second hand, hours, minutes, small seconds, and date functions. Water-resistant to 100 metres, the watch features a sportive dial and integrated steel lugs. The lug width measures exactly 20mm.

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