Strap for Banana Stainless Steel / Blue

The Tissot Heritage T117.509.16.042.00 is equipped with lugs measuring exactly 20mm in width. This dimension is not a modern standard—contemporary watches favour 18mm or 22mm—but corresponds perfectly with the proportions of the 27mm case. An 18mm strap would result in instability and movement on the lugs; a 22mm strap would cause mechanical strain during installation. Therefore, selecting an aftermarket strap must strictly observe the 20mm specification.

Strap selection depends on intended use and aesthetic preference. For formal contexts, calf leather in vegetable tanning, cognac or tobacco colour, enhances the warm character of the satin steel case and maintains coherence with the model's vintage language. Alligator leather represents the maximalist option, conferring discrete luxury but requiring constant maintenance. NATO canvas straps in grey or sand tones transform the Tissot into a sportive-intellectual instrument, ideal for informal environments. Alignment between the minimalist case design and the chosen strap remains the primary criterion.

Strap replacement on a Tissot with 20mm lugs follows the standard procedure. Utilise a spring bar tool (widely available through watchmakers) by inserting the tip into the groove beneath the lug, pressing laterally until the spring mechanism disengages. Remove the existing strap, align the new strap with the bar pins, then reinsert the springs ensuring complete anchoring on both sides. Verify that the strap is not twisted and that the passants adhere uniformly to the case. Should you lack expertise in this operation, consult a qualified watchmaker.

Any artisan strap manufactured with 20mm lugs is compatible with the Tissot Heritage T117.509.16.042.00. Milanostraps provides a dedicated selection of straps for this lug width, available in full-grain leather, alligator leather, NATO canvas and rubber. Dimensional compatibility is guaranteed, whilst construction quality varies according to material and craftsmanship. We recommend verifying product specifications and, if necessary, contacting the atelier directly for clarification regarding patina, grain texture and surface finish.

Leather strap longevity is variable and depends on frequency of wear, moisture exposure and tanning quality. Calf leather in vegetable tanning, worn daily, typically endures 3-5 years before replacement becomes necessary, developing characteristic patina that enriches aesthetic appeal over time. Alligator leather, being more robust at the fibre level, can achieve 5-7 years with regular maintenance. Prolonged moisture exposure significantly reduces the lifespan of any leather strap. Water marks and deformation represent the earliest signals of wear. Preventative maintenance—cleaning with a damp cloth, conditioning with natural balms, complete drying following moisture exposure—substantially extends strap longevity.