Strap for 1815 Chronograph Pink Gold / Black / Pulsometer

The A. Lange & Söhne 1815 414.031 features a lug width of 20 mm. This dimension, measured perpendicularly between the two attachment points on the case, is specific to this model and requires straps compatible with this specification. An error of even 1 mm would result in excessive play or impediment in correct wear.

Alligator in cognac, tobacco, or dark brown tones represents the optimal choice: the granular texture dialogues with the natural patina of gold, and the flexibility of reptile leather ensures prolonged comfort. Alternatively, vegetable-tanned calf in honey colour evolves chromatically over time, mirroring the changes of the case. Glossy synthetic straps or saturated colour combinations are discouraged.

The strap is changed by removing the spring bars that connect it to the case lugs. Using a dedicated tool (strap tool or small flat screwdriver), gently press one of the pins to release the internal spring, sliding out the previous strap end. Then insert the new strap end, aligning it with the lugs, and release the pin. This operation requires patience to avoid damaging the rose gold lugs.

Although the lug width is 20 mm, it is important to verify that the strap thickness at the attachment point is proportionate to the depth of the case lug. An overly thick strap would cause unsightly lateral protrusions; one too thin might prove fragile. It is advisable to verify the construction specifications and consult directly with the strap manufacturer before purchase, or contact professionals such as Casati Milano for personalised advice.

Durability depends on material, tanning, and frequency of use. A quality alligator or vegetable-tanned calf, with average use (5-6 days per week), maintains structural effectiveness for 4-6 years before requiring lug regeneration or junction restitching. Shell cordovan can last up to 8-10 years if subjected to regular maintenance (gentle cleaning and annual conditioning). Synthetic straps have shorter durability, typically 2-3 years. Casati Milano warranty: 18 months for manufacturing defects.