Strap for Spirit Automatic 40 Blue / Prestige Edition

The Longines Spirit L3.810.4.93.9 features 21mm lugs. This measurement is exact and admits no tolerance: 20mm or 22mm straps will not mount correctly. Lug width is measured internally, between the inner edges of the steel tube.

Alligator with vegetable tanning is the finest choice: regular scales amplify the quadrant's minimalism, and patina evolves over time. Shell cordovan suits those seeking durability and tight grain. Italian calf offers the best balance between initial comfort and longevity. NATO and rubber straps are back-up options for summer or outdoor activity.

The Longines Spirit employs two standard spring bars that retain the strap. Using a spring bar tool, compress the pin, extract the old strap, and insert the new one, verifying the pin clicks into place. A 3–5 minute operation for experienced users.

Yes, provided they measure 21mm wide and total length between 240–250mm (measured flat). Bespoke straps from Milano Straps are fully compatible. Always verify the spring bar pin diameter: the Longines Spirit uses standard 1.8mm pins.

An alligator or shell cordovan strap lasts 5–8 years with daily wear and minimal maintenance (humidity protection, air drying, avoiding perfume or harsh cleaners). Italian calf averages 3–4 years. Longevity depends on sweat acidity, use frequency, and rotation with other straps.