This Longines wristwatch presents a pocket-watch-conversion (marriage) built around a Calibre L878.4 movement dated to the 1980s. Housed in a jumbo 45mm case, it pairs the scale and presence of a pocket movement with contemporary wristwear dimensions. The L878.4 brings traditional mechanical construction and Longines’ watchmaking lineage into a modern wearable format. For the collector interested in horological transition pieces, it illustrates the craft of adapting historic movements for wrist use while retaining the character of the original caliber.