Strap for Speedmaster First Omega in Space

The lug width of the Speedmaster First Omega in Space 311.32.40.30.01.001 is 19mm, measured from the inner point to the inner point between the two lugs of the case. This measurement is specific to the model and does not vary depending on the strap mounted.

The best strap depends on use: alligator or vegetable-tanned leather for formal elegance, NATO for everyday versatility and quick changes, shell cordovan for durability and patina over time. All must be compatible with the 19mm lug width.

Changing the strap requires extraction of the spring bars that connect the strap to the case. Use a dedicated tool or the flat edge of a Swiss knife: push down the pin from the opposite side until the internal spring is released, remove the old strap and insert the new one by aligning the pins in their respective seats.

Yes, provided that the strap is made for the 19mm lug width. Handcrafted straps online or bespoke from specialized ateliers guarantee full compatibility. Avoid standard 20mm straps that would force adaptation and could compromise the lugs.

A quality handcrafted leather strap (alligator, vegetable-tanned leather, shell cordovan) lasts an average of 5-10 years with daily use, varying based on exposure to light, humidity and sweat. Vegetable tanning accelerates aesthetic aging but increases structural solidity over time. Many ateliers offer buckle replacement or minor repairs to extend useful life.