Strap for 99.1

The lug width of the D. Dornblueth & Sohn 99.1 (10) ST is 22mm. This measurement refers to the distance between the two pins (metal bars) that attach the strap to the case. It is important to measure it precisely using a digital calliper, accounting for a tolerance of ±0.5mm due to manufacturing variations.

The ideal strap depends on your usage and aesthetic preferences. For those who prioritise artisanal authenticity, we recommend a vegetable-tanned Tuscan leather that will develop patina over time. For a sport-casual aesthetic, a NATO strap in military grey echoes the toolwatch philosophy. Alligator represents the most refined choice, whilst FKM rubber ensures maximum daily versatility and weather resistance.

To change the strap, acquire a spring bar tool. Position the watch on a soft surface, gently press the small metal tip of the spring bar tool against the lateral pins to release them, and the strap will detach. Repeat on the other side. Insert the new 22mm strap, aligning the holes with the pins, and verify proper insertion by applying gentle pressure.

Yes, absolutely. A high-quality aftermarket strap will not compromise the structural integrity of your watch. Ensure the lug width is exactly 22mm. Milano Straps offers a wide range of artisanal-grade straps compatible with this model, crafted in vegetable-tanned leather, NATO, alligator and rubber, selected for compatibility and construction quality.

The lifespan of a leather strap depends on frequency of use, moisture exposure and the quality of the material. A vegetable-tanned Tuscan leather, worn daily, typically lasts 3-5 years before requiring replacement. Regular maintenance—cleaning and application of protective waxes—significantly extends longevity. Milano Straps' artisanal straps are crafted from premium materials that age gracefully.