Strap for Lange 1 Daymatic Yellow Gold

The lug width of the A. Lange & Söhne Lange 1 320.021 is precisely 20 mm. This measurement is specific to the model and ensures correct proportion between the 39.50 mm diameter case and the strap. Measurement should be taken internally, from edge to edge of the case lugs.

For the 320.021 in yellow gold, alligator remains the natural choice: the compact texture and natural quill marks create elegant optical vibration without competing with the open caseback. Alternatively, vegetable-tanned calf offers noble ageing, whilst shell cordovan guarantees controlled rigidity and intrinsic lustre that reflects light like the case itself.

Strap change requires a small spring bar tool or dedicated extraction bar. Insert the flat end of the tool into the lateral opening of the lug, gently push downward to release the spring, then slide the strap outward. Repeat on the other side. It is advisable to perform this operation on a soft, flat surface to prevent scratching.

Yes, provided the strap has been manufactured with 20 mm lug width and constructed in high-quality materials (alligator, calf, shell cordovan, specialist FKM rubber). A handcrafted aftermarket strap allows you to personalise the watch whilst maintaining correct proportions and constructive standards compatible with the watch's value.

The lifespan of a natural leather strap depends on intensity of use, climate, and tanning quality. Vegetable-tanned calf or artisan-crafted alligator maintains optimal functionality for 3–5 years of daily wear; beyond this period, the strap may develop cracks due to natural leather oxidation, requiring replacement. Standard artisan warranty covers 18 months from manufacturing defects.