Strap for Jazzmaster Lady Automatic 34mm

The lug width of the Hamilton Jazzmaster H32315151 is 18 millimetres. This measurement, also referred to as lug width, represents the internal distance between the two metal lugs where the strap attaches. It is a relatively uncommon specification nowadays compared to modern 20 and 22 millimetre standards, so always verify this specification before purchasing an aftermarket strap.

For the H32315151, we recommend a vegetable-tanned calf leather strap for elegant daily wear, or alligator for formal occasions and extended durability. Alternatively, a NATO fabric strap offers sportive versatility. Your choice depends on the intended use and the colour of the dial. All our 18mm straps are compatible with the lugs of this model.

To change the strap, you must remove the pins that connect the strap to the case lugs. Use a dedicated tool (spring bar tool) to compress the internal spring of the pin and slide the pin outward. Then align the new strap with the lug holes and reinsert the pin with its spring. If you are not experienced, we recommend consulting a professional watchmaker or Atelier Casati Milano for personalised strap replacement.

Yes, any aftermarket strap of high quality with an 18 millimetre lug width is mechanically compatible with the H32315151. However, we recommend selecting materials and finishes that are consistent with Hamilton's original aesthetic. Our straps are manufactured with precise tolerances to guarantee a perfect fit without mechanical play.

A calf leather strap with vegetable tanning, if properly cared for, lasts approximately 3 to 5 years with daily use. Longevity depends on sunlight exposure, humidity, and frequency of wear. We recommend protecting the strap from prolonged immersion in water and allowing it to dry naturally. An alligator strap, by contrast, easily achieves 15 to 20 years of operational life with regular maintenance.