Ressence · Type 5

Strap for Type 5 Black

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter46 mm
ReferenceType 5B
FamilyType 5
MovementRessence caliber ROCS5 hours, minutes, small seconds | day | thermometer
Year2015
CaseTitanium

Spring bar

Swiss Standard universal spring bars

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

Straps for the Type 5 Type 5B

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Type 5 Type 5B, seen from the bench

The Type 5 represents a diver's watch with a rotating disc display system immersed in oil. It is equipped with the in-house ROCS5 caliber with hour, minute, small second, day and integrated thermometer indications. The lugs measure 24mm in width.

Frequently asked questions

What is the exact lug width of the Ressence Type 5B?

The Ressence Type 5B features a lug width of precisely 24 millimetres. This measurement is specifically designed for the 46mm case and is critical for a seamless strap change. Always verify that any replacement strap meets this exact specification, as even minor deviations can compromise the fit and load distribution on the case lugs.

What is the best strap for the Ressence Type 5B?

There is no universally superior choice, but rather a hierarchy of aesthetic and constructive coherence. Alligator leather with vegetable tanning offers balance between tradition and contemporaneity. Dark satin calf emphasises the modern engineering of the timepiece. NATO straps in heavy cotton celebrate the constructivist austerity of its design. Your choice depends on the narrative you wish to convey: classical, contemporary, or experimental.

How do you change the strap on a Ressence Type 5B?

Strap replacement requires specialised tools: a strap removal tool or watchmaker's gauges to dislodge the spring bars connecting the lugs to the case. Given the titanium case and the Type 5B's generous dimensions, the operation demands care to avoid scratching. If you lack confidence, consulting a specialist watchmaker remains the prudent choice, particularly given the constructive value of this timepiece.

Are aftermarket 24mm straps compatible with the Type 5B?

Yes, all straps with 24-millimetre lugs are physically compatible with the Type 5B, regardless of manufacturer. However, constructive quality varies significantly. Relying on artisanal producers who control tolerances ensures superior fitment precision, avoiding mechanical play and accelerated wear. The 24mm width remains a specialised measurement requiring greater attention than more common diameters.

How long does a leather strap last on a Ressence Type 5B?

The lifespan of a quality leather strap (alligatore, vegetable-tanned calf) ranges between 5 and 10 years, depending on personal wear rate and climatic conditions. Leather subjected to excessive humidity and significant temperature fluctuations deteriorates more rapidly. High-quality synthetic or natural rubber straps offer comparable longevity but with less visible deterioration. Regardless of material, periodic maintenance (gentle cleaning, conditioning for leathers) significantly extends functional life.

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