Ressence · Type 5

Strap for Type 5 Black 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 5BB
FamilyType 5
MovementRessence caliber ROCS5 Hours, Minutes, Small Seconds | Day | Thermometer
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 5BB

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Type 5 Type 5BB, seen from the bench

The Ressence Type 5 features the ROCS5 caliber with indication of hours, minutes, small seconds, day and thermometer. The display system uses rotating discs for time reading without traditional hands. 24mm lugs for the strap.

Frequently asked questions

What is the lug width of the Ressence Type 5BB?

The Ressence Type 5BB features a lug width of 24mm. This measurement is specific to the Type 5 model and differs from the Type 1 and Type 2 models (20mm). The 24mm dimension is necessary for the structural architecture of the titanium case and to ensure stable strap anchoring to the lugs. Always verify that the chosen strap is certified for 24mm to avoid slippage or forcing on the lugs.

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

Strap selection depends on intended use. For professional diving environments, an FKM (Viton) rubber strap is mandatory: it offers superior grip, rapid drying and zero biological degradation. For elegant daily wear, Porosus alligator leather (natural coarse grain) or vegetable-tanned calf represent suprematist choices. Cordura NATO offers a pragmatic balanced solution: it resists moisture, wear and maintains aesthetic legibility. Each type is available in the 24mm strap section of Milano Straps.

How do I change the strap on the Type 5BB?

The Type 5BB strap is changed manually without specialised tools. You must push the lug pins (anse pins) inward using a flat tool (spoon tool or simply rigid card stock). Once the first pin is released, the old strap slides free from the case. Insert the new 24mm strap by aligning the holes and reinserting the pins, verifying absolute lock. Never force the pins: titanium is resistant but not immune to scratches. For specific procedural details, we recommend contacting Milano Straps customer service for guided consultation.

Is an aftermarket strap for the Type 5BB compatible with the original case?

Yes, but with rigorous verification. Milano Straps supplies 24mm straps certified for Type 5BB compatibility. Compatibility is guaranteed only if: (1) the lug width is precisely 24mm; (2) the strap respects maximum thickness of 4.5mm to avoid compression on case sides; (3) the strap holes are aligned for mounted pins (no offset). All straps proposed by Milano Straps for this measurement are dimensionally verified before shipment.

How long does an alligator leather strap last on the Ressence Type 5BB?

The lifespan of an alligator strap depends on use and maintenance. Under moderate daily wear conditions, a quality Porosus alligator (vegetable tanned) has a useful life of 4-6 years before replacement becomes necessary. Frequent exposure to salt water (snorkelling, diving) significantly shortens the useful life to 2-3 years, as alligator is unsuitable for prolonged diving. Regular maintenance (drying after water contact, annual conditioning with neutral wax) extends longevity. For frequent diving use, we recommend FKM rubber straps instead, which have practically unlimited lifespan with basic maintenance.

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