Omega
Seamaster Diver 300M 2296.80.00— lug 20mm

The Seamaster Diver 300M 2296.80.00 has a lug width of exactly 20mm. This measurement refers to the distance between the two internal pins (lugs) of the case to which the strap attaches. It is essential to measure this correctly with a digital caliper to ensure complete compatibility with aftermarket straps.

There is no universally 'best' material, but three excellent options: authentic alligator offers elegance and extraordinary patina; vegetable-tanned calf combines character and fascinating aging; Japanese shell cordovan guarantees density and extreme longevity. FKM or nitrile rubber remains the most sporty and robust choice for aquatic environments. The choice depends on usage: elegant daily wear, frequent diving, or vintage collecting.

To change the strap on the 2296.80.00, you need precise tools: a dedicated removing tool (spring bar tool) with a thin tip, a scratch-proof support, and the new 20mm strap. Position the watch with the case facing downward; insert the removing tool into the small hole of the internal pin, push it slightly to release the spring, and pull off the old strap. Reverse the procedure with the new strap. We recommend having guidance on your first strap change to avoid damaging the case.

Yes, all straps with a 20mm lug width are fully compatible. Online you will find <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-20mm">artisanal 20mm straps</a> ready for shipment, customizable in color, length, initials, and thread color. For even more refined experiences, the Casati Milano atelier offers made-to-measure creations with direct leather selection and an 18-month guarantee.

Durability depends on the material and usage. Alligator and vegetable-tanned calf, with regular maintenance (periodic cleaning, avoiding persistent moisture), last 5-7 years in daily use. Shell cordovan exceeds even 10 years thanks to extraordinary molecular density. Vulcanized rubber lasts 4-6 years but remains insensitive to salt water and harsh environments. A sports leather strap subject to frequent diving will have reduced durability: in that case, rubber remains the optimal choice to preserve your investment.