Strap for Timewriter II Chronographe Bi-Fréquence 1.000

The lug width of the Montblanc Villeret 107343 is 20mm. This measurement represents the distance between the two spring bars (lugs) of the case. It is essential to measure this distance correctly before ordering an aftermarket strap, as an incorrect measurement would result in incompatibility and unintended structural stress on the watch's terminal lugs.

For the Villeret 107343, we recommend an alligator strap in dark brown or black, which emphasises the formal character of white gold and the chronograph's complexity. Alternatively, vegetable-tanned calf develops a patina over time that parallels the natural ageing of the case. For sportier contexts, a NATO strap in grey or navy blue synthetic silk maintains chromatic coherence, whilst FKM rubber is ideal for daily wear.

To change the strap on the Villeret 107343, use a spring bar tool to gently remove the terminals from the case lugs. Remove the two spring bars (one on each side) and insert the new strap's terminals into the same lug holes. Ensure the spring bars are fully coupled and locked in position. If you are not familiar with this procedure, contact Casati Milano for professional assistance.

Any strap with a 20mm lug width is compatible with the Villeret 107343, provided the terminals are correctly proportioned. Milano Straps offers a curated selection of leather straps (alligator, calf, cordovan), NATO, and FKM rubber, all dimensioned for 20mm lugs and tested for aesthetic compatibility with watches in this category.

The lifespan of a leather strap depends on the tanning method and usage conditions. A quality vegetable-tanned alligator strap typically lasts 5–7 years with regular wear. Calf leather has slightly lower durability (3–5 years), whilst shell cordovan, if properly maintained, can last 10+ years. Exposure to moisture, perspiration, and UV rays accelerates ageing. An FKM rubber strap, conversely, retains its elastic properties for 8–10 years without significant deterioration.