Experience the craft of Tudor in the North Flag (ref. 91210N-0001), an elegant watch engineered for daily versatility and long-term reliability. From profile to crystal, the architecture convinces: measuring 40 mm in diameter, defined by a round silhouette, paired with a rotating, 0-60 (dive) bezel. The caseback is open, and the crystal is sapphire, delivering water resistance to 10000 meters. Up close, the dial rewards inspection: a black tone with matte finish, framed by stick / dot hour markers, and arrow hands. Inside, precision takes center stage: the MT5621 caliber. First released in 20152021. Designed for real-world wear, the watch transitions smoothly from tailored looks to casual settings. Manufacturing tolerances and surface treatment highlight consistent quality control. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.