Strap for Carrera Quartz 39 Stainless Steel / Blue

The lug width of the TAG Heuer Carrera WAR1112.FC6391 is 20 millimetres. This measurement is defined by the internal distance between the two integrated lugs of the case and represents the precise space into which the strap must fit. A compatible strap must have a width of exactly 20 millimetres to ensure correct installation without mechanical play or excessive pressure on the anchor pins.

The choice depends on intended use and aesthetic preferences. For maximum elegance, a natural brown alligator or Shell Cordovan creates sophisticated contrast whilst maintaining chronograph sportiness. If the watch is intended for formal contexts, colour cordovan or vegetable-tanned calf leather are refined choices. For sports or outdoor use, dark grey FKM rubber or NATO fabric guarantee robustness and practicality. We recommend assessing the watch dial: black dials benefit from warm materials such as cordovan, whilst blue or silver dials pair naturally with alligator or calf leather.

Strap replacement requires a dedicated tool (spring bar tool) to compress the elastic pins that anchor the strap to the case lugs. Position the tool in the slot of the pin, gently compress it inward and slide the strap out of the lug. Once the old strap is removed, align the holes of the new strap (20 millimetres) with the lugs, insert the elastic pin first on one side, then on the other, ensuring it clicks fully into place. If you lack experience, consult a professional watchmaker to avoid damaging the watch.

Yes, it is entirely possible and indeed recommended if you desire aesthetic versatility and superior quality artisanal materials. Aftermarket straps of 20 millimetres (both leather and rubber) are perfectly compatible with the lugs of the WAR1112.FC6391, provided they are manufactured to correct technical specifications. The watch enthusiast community recognises artisanal straps as a preferable solution to original bracelets for those seeking customisation and superior build quality: vegetable-tanned leather or Shell Cordovan offer superior character and durability. Always verify that the strap has been produced for a 20 millimetre lug width.

The durability of a leather strap depends on the material, use and maintenance. Shell Cordovan or alligator leather tanned with vegetable tanning can last 4-6 years of moderate daily use, with a patina that becomes increasingly beautiful over time. Vegetable-tanned calf leather has similar durability, approximately 4-5 years, with a capacity to absorb moisture that makes it less stable in high-humidity environments. Chrome-tanned calf (less noble but more resistant) can last 5-7 years. FKM rubber has superior longevity, up to 8-10 years, but can degrade if exposed to direct heat sources or UV rays for extended periods. To extend strap life, we recommend rotating it with at least one other strap, drying it after moisture exposure and subjecting it to periodic maintenance by a specialist craftsman.