Strap for Spirit 31 Quartz

The lug width of the Longines Spirit L2.198.4.53.6 is 15 millimetres. This measurement is taken from the inner point of one lug to the other, where the strap enters the case. Any compatible strap must be ordered in 15mm to ensure a perfect fit and proper functioning of the buckle or deployante clasp.

The optimal material depends on your usage: alligator provides formal elegance with a fine grain that complements rather than competes with the dial; shell cordovan offers unique patina and distinctive ageing characteristics; vegetable-tanned calf ensures everyday discretion; NATO fabric is ideal for sports or professional contexts. Milano Straps offers all these options in 15mm, customisable with initials and choice of stitching thread.

The strap is changed using a dedicated spring bar tool to remove the pins connecting the strap to the lugs. Insert the tool into the slot of the spring bar, gently push until the bar retracts, then remove the old strap and insert the new one. Ensure the new strap has a 15mm lug width and that the spring bars are correctly positioned before closing.

Yes, any quality strap with a 15mm lug width is compatible with the Longines Spirit L2.198.4.53.6, provided the spring bars are standard. Milano Straps produces handcrafted 15mm straps fully compatible with this model, offering customisation in material, colour, length and stitching thread. The Casati Milano atelier provides additional guidance in selecting the most suitable strap for your wrist and usage pattern.

Longevity varies by material and use: shell cordovan with vegetable tanning typically lasts 3–5 years of daily wear and develops natural patina; alligator offers similar durability with regular care (avoid prolonged moisture, clean with soft cloth); smooth calf shows wear signs sooner but remains aesthetic. Milano Straps guarantees their straps for 18 months and provides guidance on maintenance and conscious ageing.