Strap for Speedmaster Replica 57 Stainless Steel / Black / Bracelet

The lug width of the Omega Speedmaster Moonwatch 3594.50.00 is 20 millimeters. This width is characteristic of all Speedmaster Moonwatch models and allows the fitting of 20mm straps without the need for adapters. Measuring the lug width is simple: place a ruler from the inside of one lug to the other across the dial to verify the correspondence.

The strap most faithful to the original design of the 3594.50.00 is made of alligator or calf leather with vegetable tanning, in tobacco brown or black tones. Shell cordovan represents an exceptional alternative for those seeking superior durability and aging patina development. For practical everyday use, butyl rubber straps maintain historical proportions while guaranteeing water resistance. NATO straps offer versatility but represent a less authentic aesthetic association to the original model.

The strap on the 3594.50.00 is changed by removing the spring bars that secure the strap to the case lugs. Using a dedicated spring bar removal tool, gently press downward on one side to release the internal spring, then extract the bar. Repeat for the second bar. Insert the new 20mm strap by aligning the strap eyes with the bars, proceeding first on one side and then the other. The operation requires patience and care to avoid scratching the case.

The Speedmaster Moonwatch 3594.50.00 accepts any strap with a 20 millimeter lug width. Aftermarket straps in alligator, calf, shell cordovan, rubber, silicone and NATO nylon in 20mm are all compatible. Selection should consider exclusively the 20mm width and personal aesthetic preference: no adapter or constructive modification is necessary as the lug width was designed to accommodate standard straps of this size.

The lifespan of a vegetable-tanned leather strap varies based on daily use, sun exposure and environmental humidity. Under moderate use conditions (3-4 days per week), an alligator or calf leather strap with vegetable tanning maintains structural integrity for 5-7 years. Shell cordovan, due to superior fiber density, reaches 8-10 years of service. Natural leather with vegetable tanning develops aging patina that increases aesthetic value: light cracking is a desirable characteristic, not a defect. A butyl rubber or technical silicone strap guarantees longevity exceeding 10 years with minimal maintenance.