Milano Straps
← Oris

ITENDEFRES

SearchCart
Menu

Oris · TT1

Strap for TT1 Day Date Stainless Steel - Ceramic / White / Bracelet

Takes 25 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

25mm
25 mm strapsAll Oris
Lug width25 mm
Case diameter43 mm
Reference01 735 7651 4166-07 8 25 10
FamilyTT1
MovementOris caliber Oris 735 hours, minutes, seconds | date, day
CaseCeramic, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

View →

The TT1 01 735 7651 4166-07 8 25 10, seen from the bench

The Oris TT1 01 735 7651 4166-07 8 25 10 is a contemporary chronograph embodying the brand's racing heritage since the 1960s. The hybrid case combines high-tech ceramic and stainless steel in a 43 mm diameter, featuring a domed sapphire crystal and ceramic bezel. It houses the Oris 735 automatic caliber with manual winding, offering hours, minutes, seconds, date, and day-of-week display. The 25 mm lug width is a direct result of the case architecture and structural geometry.

Frequently asked questions

What is the lug width of the Oris TT1 01 735 7651 4166-07 8 25 10?

The lug width is 25 millimetres, an atypical and model-specific measurement. It is crucial to verify this dimension before purchasing any aftermarket strap to avoid incompatibility issues.

Which strap is best suited for the Oris TT1?

The choice depends on intended use. Black or brown alligator leather enhances the ceramic bezel with elegance. Vegetable-tanned calf develops natural patina complementing the case's ageing. Fabric NATO straps offer sporty versatility, while FKM rubber maximises technical functionality.

How do I change the strap on the Oris TT1 01 735 7651 4166-07 8 25 10?

Use a spring bar removal tool to gently extract the lugs from the attachment points. Align the new strap with the lug apertures and ensure the pins are fully secured. If inexperienced, we recommend consulting a qualified watchmaker.

Can I use an aftermarket strap designed for other 25mm watches?

Yes, provided the strap is manufactured for 25-millimetre lug width. However, we recommend physically verifying compatibility with your specific model, as minor dimensional variations in lug geometry may affect fit and overall aesthetic balance.

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

Durability depends on usage intensity, climate exposure, and maintenance standards. A quality alligator strap with vegetable tanning can endure 3-5 years with moderate daily wear. Prolonged exposure to moisture, sunlight, and perspiration reduces lifespan. FKM rubber resists longer under extreme conditions but requires periodic cleaning.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only