Strap for Formula 1 Solargraph 38 Stainless Steel / Blue / Bracelet

The lug width of the TAG Heuer Formula 1 WBY1112.BA0042 is 19 millimetres. This measurement is specific to this model and corresponds to the proportions of the 38mm case. To measure accurately, position a digital calliper across the inner shoulders of both lugs, parallel to the case plane, excluding the thickness of the spring bars.

The choice depends on your context of use. For aesthetic excellence, chocolate-brown alligator leather with medium grain naturally complements the grey dial and develops visible patina over time. For daily elegance, vegetable-tanned calf leather in deep black offers versatility. For purist-sportive use, an anthracite-grey NATO textile highlights the instrumental character. Black rubber remains ideal for summer or water-based activities.

Use a spring bar tool specifically designed for watches. Position the bifurcated end around the spring bar, pressing gently downward to disengage it from the lug seat. Extract the bar completely, then remove the old strap. Align the new strap's lug hole, reinsert the spring bar with a slight twisting motion, ensuring it is fully seated in both lug seats. Verify lateral movement: minimal play is normal.

All artisanal straps with a 19-millimetre lug width are compatible with the WBY1112.BA0042. Milanostraps.it offers a dedicated collection for 19mm straps, customisable in material, colour, initials and stitching thread. Each strap is constructed to European sartorial standards, with robust spring bar housings and saddle-stitch stitching to ensure durability through repeated changes.

Durability depends on material and usage. Vegetable-tanned alligator leather, with proper care (regular drying, avoiding prolonged immersion), maintains structural functionality for 5–7 years of daily use, developing desirable patina. Vegetable-tanned calf typically lasts 4–5 years in intensive use. Natural rubber requires replacement every 3–4 years. Casati Milano provides an 18-month warranty on all handcrafted straps, with reconditioning possible at the atelier.