Technical Archive

A. Lange & Söhne
Saxonia 405.047— lug 20mm

A. Lange & Söhne Saxonia 405.047: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Datograph Up/Down Hampton Court Edition

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

A. Lange & Söhne 405.047
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

405.047

Movement

A. Lange & Söhne caliber L951.7 Hours, Minutes, Small Seconds | Big Date | Chronograph, Flyback | Power Reserve Indicator

The Heritage

The A. Lange & Söhne Saxonia features the in-house caliber L951.7 with functions of hours, minutes, small seconds, big date, flyback chronograph, and power reserve indicator. The watch presents 20mm lugs and integrates the complications typical of the Saxon maison. The movement combines the flyback chronograph function with the patented large date system of the brand.

FAQ

What is the lug width of the A. Lange & Söhne Saxonia 405.047?

The lug width of the Saxonia 405.047 is 20mm. This measurement is determined by the distance between the lugs integrated into the white gold case. It is essential to measure the lug width accurately before ordering a compatible strap to avoid mounting errors.

What strap is most suitable for the A. Lange & Söhne Saxonia 405.047?

For this Saxonia in white gold with a minimalist dial, we recommend a vegetable-tanned alligator strap in dark brown tones or a calf leather with natural patina development. If daily wearability is a priority, a burgundy shell cordovan or slate-grey rubber strap maintains the austere character of the model.

How do I change the strap on the Saxonia 405.047?

The Saxonia 405.047 uses a standard 20mm spring bar. To remove the strap, you will need a spring bar tool: apply gentle pressure to the spring, insert the tool into the lateral slots of the spring, and slide it out from the lug. Reverse the procedure for the new strap, ensuring the spring fully reseats.

Can I use an aftermarket strap on my Saxonia 405.047?

Yes, aftermarket straps with a 20mm lug width are fully compatible. The choice of material and colour depends on your personal style and frequency of use. An artisanal leather strap of superior quality is recommended to preserve the constructive excellence of the watch.

How long does a leather strap last on the Saxonia 405.047?

A quality leather strap with vegetable tanning has an average lifespan of 3–5 years under daily wear conditions, based on frequency of use and climate exposure. The leather patinates naturally, gaining character. An artisanal strap with production guarantee offers protection against manufacturing defects for 18 months.

The next step

The right strap isn’t chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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By appointment only · Milan

The atelier's website: casatimilano.com