Strap for All Dial Chronometer Stainless Steel / Silver

The Mido All Dial M8340.4.B1.11 features a 24mm lug width, measured from the outer point of one lug to the outer point of the opposite lug. This dimension is standard for watches with 42mm cases and requires careful selection of compatible straps, as it does not fall within mainstream commercial sizes (20-22mm).

For the M8340.4.B1.11, we recommend an alligator or vegetable-tanned calf leather strap, which enhance the minimalist elegance of the 42mm case. If you prefer practicality, ballistic nylon NATO straps or FKM rubber maintain the aesthetic integrity of the watch without functional compromise. Your choice depends on intended use: formal or daily wear.

To change a 24mm lug width strap, you must remove the spring bars connecting the lugs to the case. Use a dedicated spring bar tool to compress the internal spring mechanism and extract the bar gently. Align the new strap with the lugs and reinsert the spring bars until you hear a distinct click. Verify that the bars are securely fastened before wearing the watch.

Yes, any strap with a 24mm lug width is compatible with the M8340.4.B1.11, whether from artisanal producers or established brands. Milano Straps offers a curated selection of leather, NATO, and rubber straps in 24mm, customisable and ready to ship, ensuring superior construction quality and optimal proportions for the 42mm case.

The lifespan of a quality 24mm leather strap varies by material and usage: an alligator or vegetable-tanned calf strap, with moderate daily use, typically lasts 3–5 years before replacement. Sun exposure, moisture, and heat accelerate degradation. A well-maintained strap, protected from excessive humidity and occasionally treated with leather balm, can extend its useful life to 7 years or more.