Strap for Broadway Day Date Quartz Steel / Grey

The Hamilton Broadway H43311985 is fitted with 20mm lugs, the international standard for 40mm case watches. To verify this measurement, remove the original strap and measure the thickness of the metal tube connecting the case to the terminals. Compatible artisanal quality straps are available in various finishes and materials within our dedicated 20mm catalogue.

We recommend an alligator strap with vegetable tanning for classical pairings, or premium calf leather with natural patina development for those seeking aesthetic evolution over time. For more dynamic contexts, a silk or robust cotton NATO offers versatility whilst maintaining formal elegance. The choice depends on daily use: urban-professional settings suggest noble leather; varied style alternation recommends vulcanised rubber or NATO.

Strap replacement on this case requires a dedicated tool (spring bar tool). Position the watch on a stable surface, locate the small hole on the lug shoulder, gently insert the tool tip to compress the internal spring, then extract the metal pin. Repeat on the other side. Install the new strap by inserting one end of the pin first, then compress the spring and insert the other end until it clicks shut. If you prefer to avoid risk, strap change service is available at Casati Milano atelier by appointment.

Yes, provided it is specifically designed for 20mm lug width. All straps in our 20mm collection are tested for mechanical and constructive compatibility with watches in this category. We recommend verifying that the strap does not present excessive thickness on the attachment points, to avoid visual misalignment with the case. For maximum precision, our Casati Milano atelier offers personalised assessment by appointment.

A premium quality leather strap with vegetable tanning and natural leather can last between 3 and 8 years depending on intensity of use, sun exposure and perspiration. Full-grain calf leather ages with character, whilst alligator maintains structural integrity longer thanks to its tight grain. Lifespan extends with regular maintenance: avoid prolonged water exposure, apply protective treatments every 6–12 months, alternate straps to reduce mechanical stress. Our laboratory also offers regeneration and restoration services to extend the functional life of your strap.