Technical Archive

Hamilton
Boulton H13321813

Hamilton Boulton H13321813: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Boulton Quartz Small Second Medium Stainless Steel / Macaron - Pistacchio

Technical Specifications

Hamilton H13321813
Reference

H13321813

Movement

ETA caliber 980.163 Hours, Minutes, Small Seconds

Made to Measure

The strap for this watch is made to measure

On the Hamilton Boulton the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.

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FAQ

What strap is recommended for the H13321813?

For the Boulton, materials that respect the geometric elegance of the case are recommended. Alligator with fine grain (cognac or black) is the formal choice par excellence. Calf leather with vegetable tanning develops natural patina over time. NATO straps in fine canvas offer lightweight daily wear. FKM rubber is ideal for discreet sports contexts.

How do I change the strap on the Hamilton Boulton H13321813?

Use a spring bar tool to remove the elastic pins (spring bars) from the case lugs. Insert the tool into the spring bar slot, apply gentle lateral pressure, and extract the pin. Repeat from the opposite side. Insert the new strap by aligning the holes with the spring bars, then use the tool to reinsert the pins until they click into place.

How long does a leather strap last?

A leather strap with quality vegetable tanning typically lasts 3-5 years with moderate daily use. Durability depends on exposure to UV rays, humidity, and frequency of use. A leather strap develops desirable patina, whilst alligator maintains a more stable texture over time.