Strap for Seamaster Diver 300M Automatic 44 Racing Chronometer Titanium / Black / Bracelet

The lug width of the 2269.52.00 model is 20mm. This measurement is specific and does not vary: verify it with a millimeter caliper before ordering an aftermarket strap. The 20mm is measured between the internal edges of the holes where the attachment pin passes through.

For this titanium model we recommend fine-grained alligator (elegant contrast with the case), or shell cordovan for those desiring a natural patina that evolves over time. Vegetable-tanned calf leather is ideal for sustainability and tactile feel. A NATO strap or a technical rubber deployant fully respects the watch's diving heritage.

The change requires a specific spring bar tool. Insert the flat tip under the attachment pin, applying gentle pressure to release the internal spring. Be careful not to lose the small spring and maintain its orientation during reassembly. If you are not experienced, contact a qualified watchmaker or the Casati Milano atelier.

Yes, provided the width is exactly 20mm and the thickness does not exceed the specified tolerances (typically 3-4mm). Verify that the attachment holes align with the case and that the strap does not create friction. Our custom straps guarantee certified compatibility with your model.

With regular use and proper maintenance, a quality leather strap such as alligator or cordovan lasts 3-5 years. Wear depends on frequency of use, sun exposure, and humidity. A vegetable-tanned calf strap has similar longevity. The Casati Milano warranty covers 18 months against manufacturing defects.