Strap for TimeWalker Date Automatic 4810 39 Black

The Montblanc Timewalker 105812 features a 20.00 mm lug width (ansa). This specialised format is the standard for watches in this dimensional class and allows selection from an extensive range of artisanal straps, from alligator models to interwoven NATO designs.

For the Timewalker 105812, an alligator strap with vegetable tanning represents the most versatile choice, enhancing the sobriety of the dial without competing with the geometry of the stainless steel case. Alternatively, a smooth medium-brown calfskin or a grey cotton NATO provides versatility for everyday use.

To change the strap, position the watch with the lug buttons facing downward. Use a spring bar tool to gently compress the internal spring of the lug and extract the metal pin. Insert the new strap, ensuring the passant is perfectly centred in the lug before releasing the spring. This operation requires precision to avoid scratching the case.

Yes, the 20 mm lug format permits the use of quality artisanal aftermarket straps provided they are manufactured with precision. The passant must slide smoothly through the lug without friction, maintaining consistent adherence. We recommend straps crafted with refined finishes and calibrated thicknesses to guarantee durability and wearing comfort.

Durability depends on construction quality and usage. An alligator or calfskin strap with vegetable tanning, crafted with refined finishes and regular stitching, maintains structural integrity for 3–5 years with moderate daily use. The patina that develops naturally over time represents a prized characteristic. Proper drying after humidity exposure and regular cleaning significantly extend material longevity.