Strap for Orion 35 White / Close Case Back

The Nomos Glashütte Orion 331 features an 18-millimetre lug width. This intermediate measurement, positioned between compact 16-millimetre and standard 20-millimetre specifications, was selected to maintain optimal proportions with the 35-millimetre case diameter. To verify compatibility of an aftermarket strap, measure the space between the spring bar attachment points using a digital calliper positioned perpendicular to the case.

Vegetable-tanned leather represents the most narratively coherent choice, as it develops unique patina over time, aligning philosophically with the watch's constructive minimalism. Shell cordovan, extracted from the horse's shoulder region, offers superior tactile density and develops patina that transitions toward burgundy. Natural alligator, characterised by its distinctive scutes, confers controlled luxury dimension. NATO webbing in ballistic canvas remains ideal for sporting contexts or warm seasons, guaranteeing transpiration and mechanical resilience.

The Orion 331 utilises straight lugs with 18-millimetre specification. To change the strap: 1) remove the watch from the wrist; 2) position it on a soft surface (cotton cloth); 3) use a spring bar removal tool to gently extract the pin from the terminal zone; 4) insert the new strap, aligning the anchor holes; 5) reinsert the pin, verifying secure engagement on both sides. The procedure requires precision: avoid sharp impacts that could scratch the case.

Yes. Any strap featuring 18-millimetre lug width is mechanically compatible with the Orion 331. Milano Straps offers a comprehensive selection in this specification: vegetable-tanned leather, alligator, shell cordovan, NATO webbing in ballistic canvas, and FKM rubber. Each strap undergoes rigorous quality control to guarantee mechanical compatibility and aesthetic coherence with the watch's minimalist character.

A leather strap of good quality, featuring vegetable tanning or shell cordovan construction, guarantees 3–5 years of regular daily wear, provided appropriate maintenance is observed: avoid prolonged direct water exposure, periodically clean with dry cloth, occasionally apply leather-specific conditioner. Continuous exposure to water, perspiration, and ultraviolet radiation significantly reduces lifespan. A NATO or FKM rubber strap offers superior resilience in high-humidity or mechanically demanding environments, with potential lifespan extending to 5–7 years.