Strap for Lyre 25 Automatic Stainless Steel

The lug width of the Longines Lyre L4.260.4.12.6 is precisely 13 millimetres. This non-standard width is an intentional design choice for this feminine timepiece, derived from the harmonious proportions between the 25mm case and the lugs. You can verify the measurement by measuring the internal distance between the two spring bars that connect the strap to the case using a digital calliper.

For the Longines Lyre L4.260.4.12.6, we recommend a vegetable-tanned alligator strap, which enhances the formal elegance of the timepiece through its fine grain and developing patina over time. Alternatively, vegetable-tanned calf leather, shell cordovan for superior longevity, or structured rubber for practical daily wear. Your choice depends on usage patterns and personal aesthetic preference.

Strap replacement requires a specific tool called a spring bar tool to compress the small springs inside the lugs. Gently remove the existing strap by leveraging inward with the tool, then align the new strap's holes with the spring bars and release. If you lack experience, we strongly recommend consulting a professional watchmaker for safe and proper installation.

Yes, any artisanal strap specifically constructed for a 13mm lug width is fully compatible with the L4.260.4.12.6. Ensure the vendor explicitly specifies the 13mm lug width in the product description and that the strap has been manufactured with correctly dimensioned internal holes for standard Longines spring bars.

Leather strap durability depends on material quality, frequency of use, and maintenance practices. A quality artisanal alligator or vegetable-tanned calf strap typically lasts 5-7 years with daily wear, whilst shell cordovan can exceed 10 years. Constant stitching stress and exposure to sunlight and humidity accelerate deterioration. Proper periodic cleaning and dry storage significantly extend strap lifespan.