Strap for Tourbillon Pour le Mérite White Gold / Black

The A. Lange & Söhne Tourbillon 701.028 features a lug width of 20 millimetres. This measurement is determined by the geometry of the white gold integrated lugs and reflects the harmonic proportions of the 38.50-millimetre case diameter. To measure accurately, position a digital calliper perpendicular to the lugs at the midpoint between the two attachment holes. A 20mm strap ensures optimal tension without slack or binding stress.

The ideal strap depends on usage and aesthetic preferences. For formal contexts, alligator in black or deep brown amplifies the elegant nature of the watch and creates harmony with the visible constructive precision of the tourbillon. Calf leather with vegetable tanning offers softness and natural patina that evolves over time. Shell cordovan represents the choice for purists, with an almost mirror-like lustre that develops with age. For summer versatility, a rubber and canvas strap maintains authority without excessive formality. All these materials are available in 20mm size compatible with your 701.028.

Changing the strap on the 701.028 requires precision and professional-grade tools. Use a high-quality spring bar tool to avoid scratching the white gold case. Place the watch on a soft protective surface. Carefully insert the tool's tip into the spring bar access hole, compress the internal spring to free the bar, then extract it. Repeat on the other side. Insert the new 20mm strap by sliding the bars into the attachment holes, ensuring complete locking. If inexperienced, consult a professional watchmaker to prevent damage to the delicate lugs.

Yes, any strap equipped with 20-millimetre spring bars is compatible with the 701.028, provided the width is precisely 20mm. However, for a watch of this importance, it is essential to choose straps from artisans specializing in luxury horology, who understand the qualitative and constructive requirements. Inferior straps would compromise the overall experience and aesthetic patina of the watch. We recommend artisans using premium leathers (alligator, calf, shell cordovan) and offering solid guarantees on craftsmanship.

Strap longevity depends on material, daily usage, and care. Premium alligator, worn for formal occasions, typically lasts 5–7 years. Calf leather with vegetable tanning, in daily use, resists for approximately 3–4 years before showing significant wear. Shell cordovan, thanks to its natural density, can exceed 7–10 years of regular wear, especially if treated with protective wax periodically. Prolonged sun exposure, moisture, and heat accelerate ageing. To extend longevity, avoid prolonged water contact, apply protective wax occasionally, and store in temperate environments when unworn.