Oris · TT1
Strap for TT1 Day Date Stainless Steel / Grey / Rubber
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The TT1 01 735 7651 4163-07 4 25 06, seen from the bench
Frequently asked questions
What is the lug width of the Oris TT1 01 735 7651 4163-07 4 25 06?
The lug width (ansa width) of the Oris TT1 01 735 7651 4163-07 4 25 06 is 20mm. This dimension represents the distance between the attachment pins on the case and determines strap compatibility. Measuring the free space between the pins—excluding their diameter—ensures you purchase a strap of the correct width.
What is the best strap for the Oris TT1 01 735 7651 4163-07 4 25 06?
There is no single choice; it depends on usage and aesthetic preference. For formal-sports contexts we recommend alligator with vegetable tanning in dark tones. For marine or mountain environments, a grey or black NATO fabric offers practicality and resilience. Vulcanised rubber accentuates the technical character. Every 20mm material transforms the watch's personality, so your choice should reflect your personal style.
How do I change the strap on the Oris TT1 01 735 7651 4163-07 4 25 06?
Strap replacement on this case occurs through extraction of the attachment pins. Using a spring bar tool, position the forked tip beneath the pin from one side, apply gentle upward pressure to release the internal spring, then extract the pin. Repeat on the other side. Insert the new strap by threading the pins into the attachment lugs, verify tightness with gentle manual pressure. Avoid hammers or excessive force: the pins are precision components.
Which aftermarket straps are compatible with the Oris TT1 01 735 7651 4163-07 4 25 06?
All straps with 20mm lug width are compatible with the TT1 01 735 7651 4163-07 4 25 06. Available in leather (alligator, calf, shell cordovan, vegetable tanning), NATO fabrics, vulcanised rubber, steel. Milano Straps offers a curated collection for 20mm width, customisable online, ready for dispatch. Verify the lug width on the watch's technical sheet before purchase.
How long does a leather strap last on an Oris TT1 01 735 7651 4163-07 4 25 06?
Durability depends on material and usage. Fine-grained calf leather lasts 3–4 years with moderate daily use. Alligator with vegetable tanning achieves 5–6 years as its superior density resists friction better. Shell cordovan, thanks to its fibrous structure, exceeds 7 years. Accelerating factors: constant humidity, perspiration, prolonged sun exposure, mechanical stress. Regular maintenance (cleaning, occasional conditioning) significantly extends strap lifespan.
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