Technical Archive
Swatch
Swatch
Sistem 51 YIS403— lug 20mm
Cinturino per Swatch Sistem 51 YIS403 (20mm). Cuoio, NATO, gomma artigianale. Scopri compatibilità e abbinamenti su Milano Straps.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Swatch YIS403
Lug Width
20
mm
The essential strap measurement.
Browse 20mm straps →
Reference
YIS403
Movement
Swatch caliber Sistem51 Date
The Heritage
The Sistem 51 was introduced in 2013 as the first fully machine-assembled automatic mechanical movement. It uses the Sistem51 caliber with 51 components, 19 jewels, and date indication. The case is made of plastic material with a sealed, non-repairable movement.
Compatible Straps
Selected for 20mm lug width