Strap for Seamaster Diver 300M Automatic 36.25 Stainless Steel / Red / Bracelet / Marui

The lug width of the 2552.61.00 is 20 millimetres. This measurement is specific to this model and reflects the proportions of the 36.25 mm case. To verify it, use a digital calliper and measure from inside to inside between the lugs of the case, ensuring it corresponds to 20 mm before ordering a replacement strap.

The choice depends on the context of use. For pure elegance, ebony alligator or dark brown alligator enhances the blue wave dial and steel finishing. For water resistance and versatility, vegetable-tanned calf or shell cordovan offer natural impermeability. If the 2552.61.00 is used in extreme environments, a technical NATO or vulcanized rubber guarantee absolute durability.

To change the strap without risking scratching the case, use a dedicated tool (spring bar tool) to push inward the retention springs (spring bar) that secure the strap to the lugs. Proceed gently one side at a time, avoiding sharp blows that could bend the pins. If you are not experienced, entrust the task to a professional watchmaker.

Theoretically yes, but compatibility also depends on the total length of the strap (measured from the first hole to the first hole) and the lug shoulder. The 2552.61.00 has specific proportions: an aftermarket strap must be measured carefully to fit correctly on the case and allow comfortable adjustment at the wrist without visible excess.

A quality leather strap—such as alligator with vegetable tanning or calf—lasts 2–5 years with daily wear, depending on exposure to humidity and climate variations. Those who frequently wear the 2552.61.00 in humid environments accelerate wear; in such cases, shell cordovan resists better. Vulcanized rubber or NATO straps last 3–7 years with less visible degradation.