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Oris · Flight Timer

Strap for Flight Timer² Day Date Stainless Steel / Silver / Leather

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

21mm
21 mm strapsAll Oris
Lug width21 mm
Case diameter42 mm
Reference01 635 7568 4061-07 5 21 55
FamilyFlight Timer
MovementOris caliber Oris 635 hours, minutes, seconds | date, day
Year2007 - 2010
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Flight Timer 01 635 7568 4061-07 5 21 55

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Flight Timer 01 635 7568 4061-07 5 21 55, seen from the bench

The Flight Timer is equipped with the Oris 635 caliber with hour, minute, second, date and day of the week indication. The case features 21mm lugs. The movement offers the essential functions for aviation use with a dual calendar display.

Frequently asked questions

What is the lug width of the Oris Flight Timer 01 635 7568 4061-07 5 21 55?

The Oris Flight Timer 01 635 7568 4061-07 5 21 55 features 21mm lugs. This measurement is specific to the Flight Timer family and requires straps constructed to this width. Measure the lug by laying the strap in the seat: the measurement must pass without lateral tension.

Which strap is best suited for the Oris Flight Timer?

For the Flight Timer 01 635 7568 4061-07 5 21 55, we recommend three options. For elegant daily wear: ebony or mahogany alligator with deployante. For cold season: vegetable-tanned calf leather in natural or cognac, which develops visible patina. For tropical climates or frequent flying: black or brown FKM rubber with smooth texture, which ensures grip in moisture.

How do you change the strap on the Oris Flight Timer 01 635 7568 4061-07 5 21 55?

The Flight Timer has well-designed lugs that facilitate quick strap changes. Use a small flat-lever tool (spring bar tool) or your fingers, applying gentle pressure on the internal spring of the lug: the strap disengages in seconds. Insert the new strap by aligning the end with the seat, then close by gently pushing until the spring clicks into place.

What aftermarket strap is compatible with the Oris Flight Timer?

Any strap constructed with a 21mm lug width is compatible with the Flight Timer 01 635 7568 4061-07 5 21 55. Milanostraps offers a specialised range of 21mm artisan straps: Italian leather, alligator, NATO in Cordura, FKM rubber. Always verify that the lug seat width matches 21mm for a perfect fit.

What is the lifespan of a leather strap on the Flight Timer?

Lifespan depends on material and use. Vegetable-tanned calf leather, worn daily, has a useful life of 2-3 years before requiring finishing renewal. Alligator, more resistant, lasts 3-5 years. FKM rubber resists 4-6 years. Wear concentrates on the wrist zone: Atelier Casati Milano offers regeneration and finishing replacement services to extend longevity.

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