Strap for Seamaster Diver 300M Automatic 41 Stainless Steel / Yellow Gold / Blue / Bracelet

The lug width of the Seamaster Diver 300M 2432.80.00 is 20mm. Measure the space between the two horizontal lugs of the case to verify compatibility before purchasing a strap. This measurement accommodates straps of varying construction quality, ranging from 18mm to 22mm in wrist width.

For the 2432.80.00 two-tone model, we recommend Porosus alligator in cognac shade (amplifies the warmth of the gold while keeping the steel neutral) or aged shell cordovan for a patina synchronized with the gold case. Vegetable-tanned brown calf leather offers versatility between formal and sporty without competing chromatically with the case materials.

Unscrew the crown and use a dedicated tool (bifurcated spring bar tool) to gently lift the lug from one side of the strap holder. Extract the metal pin, remove the worn strap, insert the new strap into the seat and reinsert the pin until it clicks into place. Repeat for the other side. Verify that the strap does not protrude beyond the case edges.

Yes, provided the aftermarket strap is constructed for 20mm lug width and the maximum thickness does not exceed 4.5mm (the physical limit of Omega lugs from this era). Avoid overly rigid rubber or vegetable-tanned leather straps. Our handcrafted straps in alligator, shell cordovan and calf leather have been tested on the 2432.80.00 reference.

Durability varies with tanning method and usage: shell cordovan lasts 4-6 years with daily wear and recurring saltwater contact; Porosus alligator 3-4 years under the same conditions; vegetable-tanned calf 2-3 years. Direct sun exposure and humidity fluctuations accelerate aging. We recommend rotating between two straps to extend the longevity of both.