Strap for Alter Ego Stainless Steel - Diamond / Blue / Bracelet

The lug width of the TAG Heuer Alter Ego WP1318.BA0751 is 18mm, measured from inner pin to inner pin. This dimension is standard for quality women's watches and determines strap compatibility. To verify correctly, position a ruler perpendicular to the metal pins connecting the strap to the case, ensuring you measure only the distance between the holes where the spring bars sit.

The best strap depends on use and aesthetic preferences. High-quality alligator offers sophistication and fascinating ageing, ideal for those who appreciate sartorial tradition. Artisanal calf leather combines comfort and everyday elegance. Shell cordovan provides crystalline density and natural lustre development over time. For contemporary sporting purposes, rubber or technical fabric ensures versatility. The choice between vegetable tanning and industrial tanning affects longevity and aesthetic behaviour over time.

To change the strap, obtain a specialised tool (spring bar tool) or consult a professional. Insert the flat end of the tool under the spring pin of the lug, applying gentle pressure to compress the internal spring. Extract the pin from the lug and repeat on the other side. Insert the new pins into the available spaces of the new strap, aligning them with the case lugs, then allow the spring to expand naturally, securing the pin in place. Verify that the strap is firmly positioned before wearing the watch.

Yes, you may use compatible aftermarket straps provided they feature the same 18mm lug width. However, given the integrated nature of the Alter Ego design, it is essential to ensure that the strap respects the original visual proportions. Artisanal straps of superior quality, produced with attention to constructive detail and noble materials, guarantee mechanical compatibility and aesthetic coherence with the timepiece's heritage and identity.

The longevity of a leather strap depends on leather quality, tanning type, and daily use. A high-quality artisanal alligator or shell cordovan strap with vegetable tanning can last 5–8 years of regular use, developing a fascinating natural patina. Quality calf leather typically resists 3–5 years. Exposure to perspiration, moisture, and sunlight accelerates ageing. Appropriate maintenance—regular cleaning with a soft cloth, thorough drying after perspiration, storage in a dry environment—significantly extends the strap's useful life.