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

The lug width of the Seamaster Diver 300M 2262.50.00 is 20 millimetres. This measurement corresponds to the space between the two case lugs where the straps are attached. To verify it correctly, measure with a ruler the free space between the lugs, positioning the instrument perpendicular to the case.

The choice depends on use and style: alligator is ideal for formal occasions and dinner, vegetable-tanned calf offers a patina that ages nobly on the watch, shell cordovan combines resistance and premium elegance. For active diving use, certified rubber straps guarantee stable grip and rapid drying. NATO fabrics allow frequent changes and chromatic versatility without special tools.

Obtain a dedicated spring bar tool. Place the watch on a stable surface with the case facing upwards. Insert the flat end of the tool into the small hole under the lug, apply gentle pressure inward to release the spring bar. The procedure requires patience: avoid sudden movements that could scratch the case. Repeat on the other side. Insert the spring bars into the new strap aligning them perfectly, then reattach the spring bars to the case.

Any strap with a lug width of 20 millimetres is compatible. The depth of the lug holes must be verified: for the 2262.50.00, the lugs have a standard depth that accommodates straps up to 4.5-5 millimetres thick. We advise against uncertified Chinese straps, which often have inadequate manufacturing tolerances. Trust specialised manufacturers that guarantee controlled thicknesses and precise lug fitting.

A quality leather strap (alligator, calf, shell cordovan) lasts 3-5 years with regular use, depending on sun exposure, perspiration and humidity. Leather treated with vegetable tanning tends to last longer because the natural process creates stronger fibres. Handcrafted straps with hand-stitching are more durable than industrial straps. Regular maintenance—cleaning with a damp cloth, immediate drying after water exposure—significantly extends the strap's lifespan.