Strap for Lange 1 Timezone Concorso

The lug width (ansa width) of the A. Lange & Söhne Lange 1 116.049 is precisely 22 mm. This measurement is critical for ensuring correct strap compatibility and must be verified using a digital calliper, positioning the measuring points perpendicular to the inner extremities of the lugs to obtain an accurate reading of 22 mm.

For the Lange 1 116.049 in white gold, we recommend authentic alligator leather as a priority choice, as its natural texture and irregular grain complement the reflective properties of the precious metal beautifully. Alternatively, vegetable-tanned calf leather, preferably in black or Havana tones, offers durability over time and develops a patina that enriches the timepiece with its history of wear. Synthetic materials should be avoided entirely, as they would compromise the artisanal nature of the Lange movement.

The strap is changed by removing the spring bars using a specialist watchmaker's tool that allows lateral pressure to disengage the bars from their seating on the case. For the Lange 1, it is strongly recommended to consult an authorised service centre or experienced watchmaker to avoid damage to the delicate shoulders of the white gold case. Casati Milano provides this service by appointment at our Milan atelier.

Yes, any quality strap constructed with a lug width of precisely 22 mm is compatible with the Lange 1 116.049. It is essential to verify that the lug width is exactly 22 mm and that the strap thickness is proportionate to the case diameter, typically between 3.5 and 4.5 mm. The artisanal straps from Casati Milano are specifically designed and crafted to meet the aesthetic and functional requirements of high-horology models such as the 116.049.

A quality leather strap, crafted using vegetable tanning or authentic alligator, typically lasts 3-5 years of daily wear, with variation depending on climate conditions, frequency of use and maintenance. Leather develops a patina over time, enriching the overall aesthetic. Casati Milano guarantees its straps for 18 months against manufacturing defects. To extend longevity, avoid prolonged exposure to moisture, apply leather-specific conditioners periodically, and rotate use with alternative straps.