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Oris · Flight Timer

Strap for Flight Timer² Day Date Stainless Steel / Black / 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 8 21 61
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 8 21 61

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Flight Timer 01 635 7568 4061-07 8 21 61, seen from the bench

The Oris Flight Timer is equipped with the Oris 635 caliber, featuring hour, minute, second, date and day functions. The model features 21mm lugs and is targeted at the aviation sector. The reference 01 635 7568 4061-07 8 21 61 identifies this specific version of the Flight Timer collection.

Frequently asked questions

What is the exact lug width of the Oris Flight Timer 01 635 7568 4061-07 8 21 61?

The lug width of the Oris Flight Timer 01 635 7568 4061-07 8 21 61 is precisely 21 millimetres. This measurement must be taken between the two metal lugs in the central area of the watch case, using a digital calliper positioned parallel to the dial. Correct measurement is essential to ensure proper strap compatibility.

Which strap material is most suitable for the Flight Timer 01 635 7568 4061-07 8 21 61?

For the Flight Timer 01 635 7568 4061-07 8 21 61, several materials are recommended depending on intended use: alligator leather with vegetable tanning for formal elegance, calf leather with deployante for versatile daily wear, heavyweight canvas NATO for outdoor activities, or rubber with marked grain for maximum practicality. Selection depends on the context of use and personal colour preferences.

How do you change the strap on the Oris Flight Timer 01 635 7568 4061-07 8 21 61?

To change the strap on the Flight Timer, remove the spring bars connecting the strap to the case lugs. Use a spring bar tool to gently press the release buttons on the bars, then extract them. Align the new strap holes with the case lugs and reinsert the spring bars. Avoid forcing to prevent damage to the lugs.

Are there aftermarket straps compatible with the Oris Flight Timer 01 635 7568 4061-07 8 21 61?

Yes, all straps with 21mm lug width are compatible with the Flight Timer 01 635 7568 4061-07 8 21 61. Milanostraps offers a dedicated collection of artisanal 21mm straps in leather, premium synthetics, NATO, and rubber, with customisation options available online and fast shipping.

How long does a leather strap last on the Oris Flight Timer 01 635 7568 4061-07 8 21 61?

The lifespan of a leather strap depends on construction quality, tanning method, and usage patterns. An artisanal leather strap with vegetable tanning can last 3-5 years with moderate daily wear. Deterioration is gradual and patina develops naturally. Rubber and NATO straps are more durable over time. Regular maintenance and rotating between straps significantly extends 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