Strap for Senator Chronograph Date Stainless Steel / Black

The lug width of the 39-32-13-17-04 is 20 millimetres. This measurement is crucial when selecting a compatible strap: always verify the distance between the two lug attachments before ordering. To measure correctly, place a ruler or calliper at the narrowest point of the lugs, where the strap actually rests on the case.

The choice depends on your usage and personal style. For formal contexts, alligator in dark tones offers unsurpassed elegance and a texture that does not compete with the case's geometry. Vegetable-tanned calf leather is the most versatile solution: it ages gracefully and develops a patina that enhances the dress watch over time. For a more contemporary approach, a cotton NATO in natural tones (grey, navy blue) adds lightness whilst maintaining propriety.

Removing the strap requires a spring bar tool, an instrument that allows you to compress the spring bars that secure the strap to the case. Position the tool inside the spring bar, compress slightly until the pin releases, and the old strap will come free. Repeat for the other side. Installation is the reverse procedure: insert the new strap's pins into the lugs and ensure the spring bars lock completely. If you are uncertain, consult a specialist.

Yes, provided it is specifically engineered for 20-millimetre lug width. However, it is also important to verify the thickness of the strap at the attachment point (the 'shoulder'): very rigid straps or those with excessively thick shoulders may encounter insertion difficulties. Our straps on milanostraps.it are crafted to artisanal quality standards and are tested for compatibility with luxury watches such as the Senator.

Leather strap longevity depends on material quality, daily wear and maintenance. Fine vegetable-tanned calf, worn daily, maintains structural integrity for 4-6 years on average. Alligator, being more durable, can last 6-8 years. A cotton NATO features superior longevity. To extend strap life, avoid prolonged exposure to moisture and water, and occasionally apply a protective treatment. The patina that develops is part of character, not deterioration.