Strap for Lange 1 Perpetual Calendar White Gold / Pink

The lug width (strap attachment width) of the A. Lange & Söhne Lange 1 345.056 is 22mm. This measurement represents the internal distance between the two lugs of the case and determines compatibility with any strap. To verify, use a digital calliper by positioning the inner shoulders of the case lugs: the exact distance is 22mm. This measurement is fixed for all Lange 1 models in this configuration.

The optimal strap depends on your personal style and usage. For classical elegance, we recommend Nile alligator with vegetable tanning in Cognac brown or deep black: the irregular grain texture and natural patina enhance the asymmetrical dial. For contemporary softness and refinement, Japanese shell cordovan offers natural lustre that develops over time. European calf with vegetable tanning provides simplicity and sobriety. For formal contexts, a silk or cotton twill NATO adds intellectual dimension without excess. In all cases, Casati Milano can craft a bespoke strap in the Milan atelier, with personal leather selection.

The 345.056 strap is changed via the case lugs. Obtain a spring bar removal tool and a clean, well-lit workspace. Position the watch on a pad, locate the two small holes on the lugs, insert the tool's pin to compress the spring bar, extract the old strap. Repeat on the other side. To install the new 22mm strap, align the attachment holes with the lugs, compress the spring bar and insert the pin smoothly until you hear a click. Verify the strap sits securely before wearing the watch.

Any strap with a 22mm lug width is compatible with the 345.056. On milanostraps.it you will find a dedicated selection of 22mm straps in precious materials: alligator, calf leather, shell cordovan, silk NATO webbing, sport rubber for white gold models like yours. Always verify that the internal measurement is exactly 22mm and that the attachment points do not exceed the aesthetic margins of the case. Casati Milano straps are crafted to precise tolerances and guaranteed for 18 months against manufacturing defects.

Leather strap longevity depends on material, craftsmanship and wear. Alligator or calf with vegetable tanning, worn regularly (3-4 days per week), typically lasts 3-5 years before replacement is needed. Japanese shell cordovan, owing to its structural density, can last 5-7 years or longer. Frequency of wear, sun exposure, perspiration and humidity accelerate ageing. Casati Milano straps carry an 18-month guarantee against manufacturing defects, but with proper care (regular drying, protection from extreme moisture) remain functional and aesthetic well beyond this period. Occasional restoration at the atelier extends useful life further.