Steinhart · Diver

Strap for Ocean One Vintage Military

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter42 mm
ReferenceT0225
FamilyDiver
MovementETA caliber 2824-2 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Diver T0225

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Diver T0225, seen from the bench

The Steinhart Diver reference T0225 is equipped with the automatic ETA 2824-2 caliber with hour, minute, second and date indication. The watch features 22mm lug width for the strap. The ETA 2824-2 movement offers a power reserve of approximately 38 hours.

Frequently asked questions

What is the exact lug width of the Steinhart Diver T0225?

The lug width of the Steinhart Diver T0225 is 22 millimetres. This width is standard for mid-size dive watches and is compatible with a wide range of 22mm straps available online and through specialist retailers. To verify compatibility, measure the distance between the inner edges of both lugs.

What is the best strap for the Steinhart Diver T0225?

The best strap depends on use and personal preference. For professional and diving application, we recommend a waterproof FKM rubber. For daily elegance, a vegetable-tanned leather in dark brown amplifies the tool-watch character. For versatility, a nylon NATO is ideal. The critical requirement is respecting the 22mm lug width.

How do I change the strap on my Steinhart Diver T0225?

The Steinhart T0225 features standard 22mm lugs. To change the strap, use a spring bar tool to remove the horizontal pins securing the strap to the lugs. Position the tool in the small groove at the base of each lug, gently push the pin towards the centre, slide out the strap, and repeat on the opposite side.

Can I use an aftermarket strap on this model?

Yes, provided the lug width is precisely 22mm. All quality artisanal straps—whether in leather, alligator, or rubber—are compatible with the T0225. Always verify the technical specifications from the supplier and choose materials that reflect the robust construction quality of Steinhart.

How long does a leather strap last on a watch like the T0225?

A quality leather strap, with regular maintenance, lasts between 3 and 5 years. Longevity depends on usage (water exposure, humidity, wearing frequency, perspiration) and tanning method. A vegetable-tanned strap ages nobly; alligator maintains mechanical resistance longer. FKM rubber has superior durability, lasting 8–10 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