Oris · TT1

Strap for Oris TT1 01 690 7527 4464

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

Lug width24 mm
Case diameter42 mm
Reference01 690 7527 4464
FamilyTT1
MovementOris caliber Oris 690 Hours, Minutes, Additional 12 Hour Hand (adjustable), Day / Night Indication, Small Seconds | Date

Spring bar

Swiss Standard universal spring bars

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

Straps for the TT1 01 690 7527 4464

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The TT1 01 690 7527 4464, seen from the bench

The Oris TT1 reference 01 690 7527 4464 is powered by the Oris 690 caliber with hour, minute, adjustable hour hand, day/night indication, small seconds and date functions. The stainless steel case measures 42mm in diameter with 24mm lugs. The strap is made of rubber.

Frequently asked questions

What is the lug width of the Oris TT1 01 690 7527 4464?

The Oris TT1 (reference 01 690 7527 4464) features a lug width of precisely 24mm. This width is integrated into the lugs' geometry and is specifically calibrated to maintain correct proportions with the 42mm case. It is non-adjustable and represents a fixed standard for all straps compatible with this model.

Which strap do you recommend for the Oris TT1?

For a racing chronograph like the TT1, we recommend three options depending on your lifestyle: (1) Cognac alligator for traditional racing authenticity; (2) Vegetable-tanned calf grey or navy blue for elegant versatility with evolving patina; (3) Black or military grey NATO for absolute pragmatism and zero maintenance. Your choice depends on the balance you seek between aesthetics and daily function.

How do I change the strap on the Oris TT1 01 690 7527 4464?

The procedure is standard for watches with straight lugs: (1) position the watch on a soft surface; (2) use a spring bar tool to apply controlled pressure on the lug pins; (3) press laterally to release the pin; (4) gently remove the old strap; (5) align the new strap's pins with the lug holes; (6) snap the pin securely into the lugs. Avoid sudden impacts that could scratch the case.

Can I use third-party 24mm straps compatible with the Oris TT1?

Yes, absolutely. Any strap manufactured for the 24mm lug width is compatible with the Oris TT1 01 690 7527 4464, provided the spring bars have the same standard diameter (typically 1.8mm). We always recommend verifying specifications with the supplier to ensure precision fit. Quality straps from specialised manufacturers guarantee accurate fitment and longevity.

How long does a leather strap last on a watch like the Oris TT1?

Longevity depends on the tanning method and usage: a high-quality alligator or vegetable-tanned calf strap typically lasts 3–5 years of moderate daily wear. Critical factors include exposure to perspiration, water, and UV radiation. A vegetable-tanned calf develops beautiful patina over time, whilst alligator maintains its texture longer. Rotating between different straps significantly extends each one's lifespan. Occasional maintenance (gentle cleaning and light conditioning) can extend durability to 6–7 years.

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