Strap for Okeanos Stainless Steel / Black / BRacelet

The lug width of the Okeanos 871.101/917M is 20mm. This measurement is taken between the two attachment points of the case, at the holes where the strap is fitted. For precise verification, use a digital calliper positioned on the inner edges of the two rotation axes; the reading should be exactly 20.00mm. Tolerance below half a millimetre ensures perfect compatibility with quality aftermarket straps.

To enhance the aesthetic character of the Okeanos, we recommend an alligator strap if you seek sober formality, or a faceted rubber strap if you prefer full sportiness and summer comfort. A versatile alternative is vegetable-tanned calf leather, which develops a unique patina over time. A NATO strap in robust canvas remains a practical choice for casual contexts. Your choice depends on intended use and personal colour preferences.

To change the strap, you will need a dedicated tool called a spring bar tool or a small lever. Position the watch on a stable surface with the case facing upwards. Locate the first rotation axis (spring bar) and gently press the pin inwards using the tool, applying pressure on the strap side. When the spring compresses, the old strap releases. Repeat the operation for the second axis. To install the new strap, first insert it on one side, then compress the second spring bar and insert the opposite end into the attachment hole, releasing the spring when the pin reaches position.

Yes, any strap with a 20mm lug width is compatible with your Okeanos. Milano Straps offers a curated range of artisanal 20mm straps, crafted with excellent materials: alligator, pressed calf, shell cordovan, technical rubber and NATO. All our straps are tested for mechanical compatibility and guarantee precision in manufacturing tolerances, ensuring a perfect fit and lasting usability.

The durability of a leather strap depends on intensity of use, climate and maintenance. A quality alligator or calf strap, worn daily in non-sporting conditions, has an average lifespan of 5-8 years before the leather begins to show visible wear at the lugs. A shell cordovan strap, thanks to superior fibre density, can last 10-12 years. Regular maintenance—cleaning with a damp cloth, occasional treatment with neutral wax—significantly extends the strap's life. Prolonged exposure to water, chlorine and UV rays accelerates leather ageing.