Strap for Seamaster Diver 300M Automatic 41 Stainless Steel / White Gold / Black / Non-America's Cup

The lug width of the Seamaster Diver 300M 2230.50.00 is exactly 20 millimetres. This is the internal distance between the two lugs of the case where the strap is inserted. To verify the measurement correctly, position a digital calliper perpendicularly between the internal attachment points of the case, ensuring the value is precisely 20 millimetres. Any compatible strap must respect this measurement to guarantee stability and secure attachment to the case.

For the 2230.50.00, the ideal strap depends on intended use. If you wear the watch predominantly in terrestrial environments, genuine alligator with vegetable tanning offers the aesthetic nobility that honours the white gold presence, ageing with an extraordinary natural patina. For those who do not renounce the model's diving vocation, vulcanised natural rubber (diving rubber) is the only choice: waterproof, hypoallergenic and resistant to UV rays. Shell cordovan represents the pinnacle of elegance, but requires protection from salt water and chlorine.

To change the strap on the 2230.50.00, use a spring bar tool (spring bar remover). Position the watch with the strap facing downwards and gently insert the sharp tip of the tool into the side hole of the suspension spring, pushing inwards to release tension. Once the spring is free, extract the pin completely and repeat the operation on the other side. At this point the old strap is free. To install the new one, insert the pins into the two lugs and press until the spring clicks into position. Always verify that the strap is secure before wearing the watch.

Yes, the 20 millimetre strap of the 2230.50.00 is compatible with all Omega watches equipped with 20mm lug width, including many models from the Seamaster family, some Speedmaster and Planet Ocean. However, it is essential to always verify the lug width of your specific watch before purchase, as even a minimal difference (19 or 21 millimetres) renders the strap incompatible. On milanostraps.it you will also find visual guides to correctly identify your lug width.

The lifespan of a leather strap depends on use and maintenance. An alligator strap with vegetable tanning, if worn predominantly in terrestrial contexts and subjected to regular cleaning, can last 3-5 years. If frequently exposed to salt water, chlorine or extreme temperatures, the lifespan is reduced to 12-24 months. Vulcanised natural rubber (diving rubber), thanks to its chemical resistance and UV protection, offers a longer lifespan: 5-7 years even under intense use conditions. Casati Milano straps, made with premium materials and certified, include 18-month warranty against manufacturing defects.