Nomos Glashütte
Zürich 805.MA— lug 20mm
Nomos Glashütte Zürich 805.MA: 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 805.MAThe essential strap measurement.
Browse 20mm straps →805.MA
Nomos Glashütte caliber Xi Hours, Minutes, Small Seconds, World Time
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Zürich
FAQ
What is the lug width of the Nomos Glashütte Zürich 805.MA?
The lug width of the Zürich 805.MA is exactly 20 millimetres. This measurement refers to the distance between the two lugs of the case, where the strap is secured using spring bars (perni). Any compatible strap must measure 20 mm in width to ensure proper fitment without lateral movement or overhang.
Which strap should I choose for the Nomos Glashütte Zürich 805.MA?
Given the minimalist Bauhaus aesthetic of the Zürich 805.MA, leather straps crafted from vegetable-tanned calf, shell cordovan, or alligator are ideal companions. For a 39.90 mm diameter case with 10.2 mm thickness, we recommend straps between 3.5 and 4.5 mm thick. For sporty contexts, a grey or dark blue NATO strap maintains visual coherence. A deployante buckle is preferable to a simple passant, as it preserves the proportional harmony of the case.
How do I change the strap on the Nomos Glashütte Zürich 805.MA?
The strap is removed by extracting the spring bars (perni) from the lugs using a spring bar remover tool. Insert the tool tip into the spring bar slot and gently release the tension. Once both lugs are freed, the strap slides away. To install a new strap, align the holes with the spring bar, insert one end into the first lug, press until you hear a click, then repeat on the opposite lug. Avoid forcing—the mechanism should engage with precision.
Is an aftermarket 20mm strap truly compatible with this watch?
Yes, any strap with 20 mm lug width is technically compatible with the Zürich 805.MA. However, technical compatibility does not equal aesthetic coherence. An artisanal aftermarket strap—constructed from vegetable-tanned leather, built with two or three layers of quality hide, precise edge painting, and stainless steel buckles—preserves the watch's design language. Synthetic or poorly constructed straps diminish the overall visual impact. Strap quality directly influences the perceived value of the timepiece.
How long does a natural leather strap last on a watch like the Zürich 805.MA?
Longevity depends on usage frequency, climate, and material quality. A vegetable-tanned calf strap worn 5–6 days weekly maintains structural integrity for 3–5 years. Shell cordovan, thanks to its natural density and endogenous oils, may last 7–10 years. Critical variables include direct moisture exposure (rain, daily showers accelerate degradation), acidic perspiration (in warm environments), and spring bar replacement frequency. Preventive maintenance—annual conditioning with purpose-specific creams and regular cleaning—significantly extends strap lifespan.