Strap for 1815 Chronograph White Gold

The lug width of the 401.026 is 20 millimetres. This measurement represents the internal distance between the two spring bar attachment points that secure the strap to the case. It is essential to verify this dimension before purchasing an aftermarket strap, as an incorrectly calibrated lug width may cause instability during wear or unnecessary stress on the spring bars.

For the 401.026, the ideal choice remains an African alligator strap with vegetable tanning in neutral shades such as dark brown or black. The fine and consistent grain of alligator complements the austere Glashütte aesthetic, allowing the dial and movement to retain visual prominence. Alternatively, smooth calf leather in chocolate or burgundy tones provides superior initial suppleness and develops a compelling patina during the first year of wear, creating a mature tonal dialogue with the white gold case.

Strap replacement is accomplished using the spring bars located at the case extremities. Using a dedicated spring bar removal tool, one gently compresses the spring at each pin to disengage the existing strap. Once released, the new strap is aligned with the lugs, and the spring is released to secure the attachment. This operation requires deliberate care to prevent case scratching or inadvertent loss of the spring bars; professional assistance from an authorised service centre is advisable if uncertainty exists.

Yes, provided the aftermarket strap is precisely calibrated to the 20mm lug width specification. A bespoke strap of superior quality—crafted in alligator, shell cordovan, or calf leather with manual construction—represents a legitimate and often superior alternative to original equipment. Selection of specialised suppliers with demonstrated expertise in luxury horology is paramount, ensuring attention to leather quality, stitching precision, and hardware durability, including buckle or deployante fixtures.

The lifespan of a leather strap depends upon several variables: leather quality, frequency of wear, exposure to moisture and perspiration, and maintenance regimen. A premium alligator or shell cordovan strap may reliably serve 5 to 7 years with daily wear and ordinary care (periodic cleaning and prompt drying after perspiration). Calf leather, being inherently softer, typically requires replacement between 3 and 5 years. Regular protective treatment with natural hydrophobic creams and rotation with alternative straps substantially extends longevity.