Strap for Omega Speedmaster Professional 105.012 (anse a lira asimmetriche)

The Omega Speedmaster 105012 requires watch straps with a lug width of 20mm. This dimension is measured between the inner edges of the case lugs and is essential for correct fitment and authentic aesthetic proportions. Always verify with a digital calliper before purchasing an aftermarket strap, as even a 1mm variation compromises the fit.

A strap in natural alligator with vegetable tanning or a shell cordovan are the most consonant choices for the technical and sporty character of the 105012. Vegetable-tanned alligator develops a warm patina over time that dialogues perfectly with the case's satin steel, whilst cordovan offers warm tones and superior resistance to daily wear.

The procedure requires a specialised spring bar tool to remove the lug pins. Position the watch face-down on a soft surface, locate the small lateral hole on each side of the case, insert the tool tip to depressurise the internal spring, extract the pin, remove the old strap, and affix the new one with perfect alignment. We recommend entrusting the task to an experienced jeweller if unfamiliar with the procedure.

Yes, provided it has a certified 20mm lug width. Artisanal leather straps, alligator, cordovan, or technical rubber crafted to measure for this dimension fit perfectly and offer superior quality to original OEM straps. Always verify that the vendor specifies compatibility with reference 105012.

A high-quality natural leather strap with vegetable tanning lasts an average of 5–7 years of moderate daily use. Durability depends on exposure to water, perspiration, and extreme temperatures. Well-maintained alligator or cordovan can reach 10 years. Artisanal warranty is typically 18 months, covering manufacturing defects and stitching.