Meet MB&F Legacy Machines (ref. 07.ZR.BU), a refined timepiece that blends thoughtful design with reliable performance. A study in proportion and durability: crafted in zirconium and measuring 44 mm in diameter, with a thickness of 17.5 mm, defined by a round silhouette. The caseback is open, and the crystal is sapphire, delivering water resistance to 3000 meters. The dial composition is deliberate and legible: a black tone, framed by stick / dot hour markers, and arrow hands. Beneath the caseback lies dependable performance: the LM Perpetual caliber. Produced in limited numbers, appealing to focused collectors. First released in 2020. 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.