Strap for Spirit 31 Quartz

The Longines Spirit L2.198.4.23.6 features a 15mm lug width. This specialist dimension reflects the proportional relationship between the 31mm case and the strap attachment point. It is a non-standard intermediate measurement requiring straps specifically engineered for 15mm compatibility. Verification using a calliper is recommended to exclude manufacturing variations.

An alligator leather with vegetable tanning in dark brown represents the optimal choice, amplifying the aviatory character of the model. Valid alternatives include vegetable-tanned calf leather developing natural patina, or a vulcanised rubber strap with grain texture offering climatic versatility and sportiness. Selection depends on intended usage and personal aesthetic preference.

Strap replacement is performed using a dedicated tool (spring bar tool) or a small lever. Position the instrument in the lateral gap of the lug, apply gentle pressure to compress the spring, and slide the old strap clear. Subsequently, insert the new strap aligning the holes to the case lugs and release the spring. A straightforward operation requiring delicacy to avoid scratching the case.

Yes, entirely possible. Any strap with 15mm lug width is mechanically compatible. The construction quality of the aftermarket strap determines durability and comfort. Selecting specialised artisanal strap manufacturers ensures selected leather, precise stitching and brushed stainless steel passants, preserving the watch's elegance.

A high-quality leather strap in alligator or vegetable-tanned calf maintains structural integrity for 3–5 years with regular use. Longevity depends on ambient humidity, frequency of wear and maintenance. Leather will dry if exposed to prolonged direct heat. Periodically conditioning leather with natural waxes extends lifespan. Vulcanised rubber straps offer superior durability in humid or sporting environments.