Nomos Glashütte
Ahoi 550— lug 20mm
Nomos Glashütte Ahoi 550: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Nomos Glashütte 550The essential strap measurement.
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Compatible Straps
Selected for the 20mm lug width of the Ahoi
FAQ
What is the correct lug width for the Nomos Glashütte Ahoi 550?
The Nomos Glashütte Ahoi 550 requires a strap with a lug width of 20 millimetres. This measurement is critical to ensure the strap seats correctly within the case lugs. Measure from the inside of one lug to the other with the strap removed for accuracy.
Which artisanal strap do you recommend for the Ahoi 550?
For the Ahoi 550, we recommend an alligator strap in medium brown or a vegetable-tanned calf leather in bordeaux or tobacco tones. These materials complement the satin-finished stainless steel case perfectly. Alligator suits formal environments, vegetable-tanned calf works for daily wear, and vulcanised rubber is ideal for light water sports.
How do you change the strap on a Nomos Ahoi 550?
To change the Ahoi 550 strap, remove the existing strap by extracting the spring bars using a specialised tool. Once the bars are removed, the old strap slides free. To fit the new 20mm strap, align the holes with the spring bars and reinsert them firmly until they click. We recommend this service be performed by a qualified watchmaker or Atelier Casati Milano.
Are aftermarket straps compatible with the Nomos Ahoi 550?
Yes, any strap with a 20-millimetre lug width is compatible with the Ahoi 550. Milano Straps' artisanal straps are manufactured to this precise specification and offer superior craftsmanship to OEM alternatives. Always verify the lug width is exactly 20mm; even minor deviations (19 or 21mm) cause incompatibility.
How long does a leather strap last on a watch like the Ahoi 550?
A high-quality artisanal leather strap has an average lifespan of 4–6 years with proper care. Longevity depends on daily wear intensity, exposure to moisture and sunlight, and tanning quality. Vegetable-tanned leather develops natural patina and may last up to 8 years. Avoid prolonged moisture exposure and clean periodically with a dry cloth.