Meet Oris Big Crown (ref. 01 644 7635 4284-Set), a refined timepiece that blends thoughtful design with reliable performance. A study in proportion and durability: crafted in stainless steel and measuring 46 mm in diameter, defined by a round silhouette, paired with a rotating, 0-60 (dive) bezel, protected by pvd coating. The caseback is open, and the crystal is sapphire, delivering water resistance to 10000 meters. The dial composition is deliberate and legible: a black tone with matte finish, framed by mixed hour markers, and sword hands. Beneath the caseback lies dependable performance: the Oris 644 caliber. Issued as a limited edition, appealing to focused collectors. First released in 2009. Comfort and balance define the wearing experience, making it an easy daily companion. Subtle transitions between textures elevate the overall impression. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.