Strap for Horological Machine N°1 HM1 Red Gold

The lug width of the MB&F Horological Machines 10.T41RL.R is 20 millimetres. This measurement is proportionate to the 59mm case diameter and ensures seamless integration of the strap with the case's asymmetrical geometry. To verify compatibility, use a digital calliper positioned perpendicularly between the attachment lugs: the value should fall between 19.8 and 20.2mm.

For the HM10, we recommend alligator leather with medium grain in dark tones (black, brown, burgundy), which dialogues with the sculptural nature of the rose gold case. An elegant alternative is vegetable-tanned calf leather, which develops patina over time. For daily wear, NATO canvas straps or FKM rubber offer versatility whilst maintaining the visual impact of this horological machine.

To change the HM10's strap, use a dedicated spring bar tool to compress the lateral attachment pins. Insert the tool into the upper slot of the pin, compress gently and slide the pin outward. Repeat for the opposite side. When inserting the new strap, align the lug width with the case holes and press the pin until it locks into place. Always verify secure seating before wearing the watch.

Yes, any strap with a 20mm lug width is compatible with the HM10. Bespoke straps crafted by specialist manufacturers guarantee superior construction quality and customisation options (material, colour, finish). It is essential to verify that the strap's physical width falls between 19.8 and 20.2mm to ensure perfect fit with the attachment pins.

A quality alligator strap can last 5-7 years with regular use and proper maintenance, given the weight of the 59mm HM10 case. A calf leather strap has an average lifespan of 3-5 years. Longevity depends on exposure to moisture and heat, and frequency of use. Proper maintenance—periodic cleaning with a damp cloth and application of specialist balms—significantly extends the strap's useful life.