Strap for Seamaster Diver 300M Quartz 36.25 Stainless Steel / Blue / Bracelet / Japan

The lug width of the Seamaster Diver 300M 2260.80.00 is 20 millimetres. This measurement represents the distance between the two spring bars (the pins that connect the case to the strap). To verify this measurement, place a ruler between the spring bars and measure from the inner edge of the first pin to the inner edge of the second: the result must be exactly 20mm. Any strap compatible with this lug width will fit without requiring mechanical adjustments.

The choice depends on your intended use and desired style. For formal contexts, vegetable-tanned alligator offers noble patina and regular texture. If you prefer durable leather, shell cordovan is practically indestructible and develops a natural sheen. For a balance between elegance and practicality, vegetable-tanned calf ages magnificently. If you intend to use the timepiece as a true instrument, a NATO cotton-polyester strap remains faithful to the model's technical aesthetics. The wave-dial blue dial of the 2260.80.00 tolerates all these colour combinations without visual conflict.

To change the strap, you will need a spring bar tool or a small flathead screwdriver. Flip the watch over and look at the two metal pins connecting the bracelet to the case. Insert the tool into the small hole on the side of the pin (or gently press with the screwdriver) to compress the internal spring and release the pin from the case. Repeat for the second pin. The old strap is now free. Insert the pins into the new strap and re-engage the pins into their housings on the case, ensuring they click into position with a perceptible click.

Yes, absolutely. The Seamaster Diver 300M 2260.80.00 accepts any strap manufactured for 20mm lug width, regardless of brand or material. There are artisanal straps, rubber straps, NATO fabric straps, leather straps from the finest European tanneries that fit perfectly. The important thing is to verify that the lug width is actually 20 millimetres and that the strap has pins (or in any case a fixing system) compatible with the Omega standard. Many owners change straps seasonally or depending on the context: formal for evening, sports for daytime, nautical for sailing.

The durability of a leather strap depends on the material, tanning, use and care. An alligator or shell cordovan strap with vegetable tanning, if kept dry and not exposed to direct impacts, can easily last 5-7 years, with a patina that improves over time. Premium calf lasts 3-5 years. If the timepiece is frequently used in water or exposed to constant humidity, it is advisable to use a rubber or NATO strap. The important thing is not to leave the leather strap wet for hours: dry it immediately with a soft cloth. The warranty that Casati Milano offers on made-to-measure straps is 18 months, covering manufacturing defects or material faults.