Experience the craft of Swatch in the Sistem 51 (ref. SUTW402), a contemporary classic shaped by careful watchmaking know-how. The exterior is thoughtfully executed: crafted in plastic and measuring 42 mm in diameter, with a thickness of 13.8 mm, defined by a round silhouette. The caseback is open, and the crystal is plexi, delivering water resistance to 3000 meters. At a glance, the dial balances texture and clarity: a silver tone with sunburst finish, framed by stick / dot hour markers, and stick hands. At its heart beats a proven engine: the Sistem51 caliber. Initial production year: 2016. With considered ergonomics, it feels composed during extended wear. Brushed and polished elements play with light to emphasize crisp geometry. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.