Technical Archive

Hamilton
Jazzmaster H32451731— lug 20mm

Hamilton Jazzmaster H32451731: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Jazzmaster Quartz Stainless Steel / Black

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Hamilton H32451731
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

H32451731

Movement

ETA caliber F06.111 Hours, Minutes, Seconds | Date

The Heritage

The Jazzmaster represents one of Hamilton's contemporary collections with an ETA caliber F06.111 quartz movement. The watch offers hour, minute, second and date indication through a functional display. The H32451731 reference features standard 20mm lugs for the strap.

FAQ

What is the exact lug width of the Hamilton Jazzmaster H32451731?

The lug width of the Hamilton Jazzmaster H32451731 is 20mm. This measurement is taken from the inner shoulder of the case to the opposite shoulder, at the level of the lug holes. It is essential to verify this measurement before ordering a replacement strap, as only a 20mm strap will fit correctly without lateral play or unacceptable overlap.

Which strap is recommended for the Hamilton Jazzmaster H32451731?

The Jazzmaster H32451731 accommodates multiple strap options. For formal wear, we recommend calf leather with vegetable tanning in dark brown or cordovan. For daily versatility, a NATO in waxed canvas or nylon in dark blue or black maintains the model's restrained elegance. For absolute practicality, high-quality vulcanised rubber in black or grey offers waterproofing and lightness without aesthetic compromise.

How do you change the strap on the Hamilton Jazzmaster H32451731?

To change the strap, you will need a small spring bar removal tool or equivalent implement. Remove the watch from your wrist and position it on a soft surface. Insert the spring bar tool beneath the metal pin that secures the strap to the lug, press gently to release the internal spring, and slide the strap outward. Reverse the procedure with the new 20mm strap, ensuring the pin enters firmly into both lugs.

Will an aftermarket 20mm strap fit the Hamilton Jazzmaster H32451731?

Yes, any quality 20mm strap will fit correctly on the Jazzmaster H32451731, provided the lugs are of identical width and the spring bar is of appropriate length. It is advisable to choose reliable manufacturers that guarantee precise manufacturing tolerances: a handcrafted strap with exact measurements eliminates lateral play and ensures a seamless transition between case metal and strap material.

How long does a leather strap last on the Hamilton Jazzmaster H32451731?

The durability of a leather strap depends on the type of tanning and usage patterns. A high-quality calf leather strap with vegetable tanning, under moderate use (4–5 days per week), maintains structural and aesthetic integrity for 3–5 years before replacement. Factors such as humidity, perspiration, sun exposure, and frequency of wear influence ageing. A strap properly conserved and rotated regularly with other models will last considerably longer than one subjected to constant stress.