Strap for Pilot Watch 104 St Sa I

The Sinn 104.010 has a lug width of 20mm, a specific dimension inherited from German aeronautical tradition. This width is characteristic of Sinn's Instrument Watches models and is uncommon on many contemporary watches. To verify compatibility, measure the distance between the lugs using a digital calliper.

The choice depends on the intended use. For formal wear, a quality alligator or calf leather strap provides controlled elegance. For tactical or sports use, a synthetic fibre NATO strap offers moisture resistance and practical versatility. Vulcanised rubber represents the most coherent choice with the watch's instrumental heritage. All these materials are available in 20mm lug width at MilanoStraps.

To change the strap, obtain a spring bar tool. Insert the flat tip into the lug hole and gently lift the pin until it disengages. Repeat on the other side. Insert the pins into the new strap and position them between the lugs, then press gently until they snap into place. This operation requires patience and precision to avoid damaging the case.

Yes, the Sinn 104.010 is fully compatible with any strap featuring a 20mm lug width. MilanoStraps' artisanal straps, crafted in alligator, calf, vegetable-tanned leather and rubber, are designed for this specific width and guarantee perfect integration with the watch case.

The lifespan of a leather strap depends on material quality, frequency of use and maintenance standards. A quality German alligator or calf strap, worn daily, typically lasts 3-5 years before showing significant wear. Vegetable-tanned leather develops a unique patina over time. It is advisable to rotate straps and keep them dry after exposure to moisture to extend their lifespan.