Crafter Blue · Mechanic Ocean

Strap for Mechanic Ocean 45MM MOSS002.SB.RB

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

Lug width20 mm
Case diameter45 mm
ReferenceMOSS002.SB.RB
FamilyMechanic Ocean
MovementCrafter blue caliber 3531 date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Mechanic Ocean MOSS002.SB.RB

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Mechanic Ocean MOSS002.SB.RB, seen from the bench

The Crafter Blue Mechanic Ocean MOSS002.SB.RB is a 45mm stainless steel 316L diving watch powered by the proprietary Crafter Blue 3531 automatic movement, designed for high-salinity and high-pressure environments. The 20mm lug width is proportioned to the 45mm case diameter according to modern watchmaking standards, balancing structural stability with visual harmony. When ordering an aftermarket strap, accurate lug width measurement is essential, taken from the inner edge of one lug to the other, excluding the case attachment shoulders.

Frequently asked questions

What is the lug width of the Crafter Blue Mechanic Ocean MOSS002.SB.RB?

The Crafter Blue Mechanic Ocean MOSS002.SB.RB is equipped with a 20mm lug width. This measurement must be verified from the inner edge of one lug to the other, excluding the attachment shoulders. Precise measurement is critical when ordering an aftermarket strap to ensure secure fitment without excessive play or tension.

What is the best strap for the Crafter Blue Mechanic Ocean MOSS002.SB.RB?

The optimal strap depends on intended use. For formal contexts, vegetable-tanned alligator with natural patina development is recommended. For versatile sports wear, high-tenacity nylon NATO straps provide practicality and colour variety. For intensive marine environments, vulcanised rubber guarantees maximum UV and saltwater resistance whilst maintaining pure diving aesthetics.

How do I change the strap on my Crafter Blue Mechanic Ocean MOSS002.SB.RB?

Strap replacement requires a spring bar tool. Insert the tool into the lateral slot of the original lug, compress the internal spring, and gently extract the lug from the case. Repeat on the opposite side. Insert the new lugs into the aftermarket strap and secure them to the case using the same tool. Verify that lugs are correctly positioned and the strap is perfectly aligned.

Is there an aftermarket strap compatible with the Crafter Blue Mechanic Ocean MOSS002.SB.RB?

Yes. The Mechanic Ocean MOSS002.SB.RB uses standard 20mm lugs, compatible with any aftermarket strap of identical width. However, verify that the new strap's lugs have the same curvature relative to the case lug slots—minor variations could affect fitment. Always consult the strap manufacturer for compatibility confirmation before purchase.

What is the lifespan of a leather strap on my watch?

A high-quality leather strap, such as vegetable-tanned alligator, maintains structural functionality for 3–5 years with regular maintenance. Durability depends on UV exposure, ambient humidity, frequency of use, and storage conditions. Natural patina development is not deterioration but aesthetic evolution. Rubber and NATO straps offer superior longevity (5–8 years), whilst calf leather requires similar maintenance to alligator.

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