Aquatimer Deep Two

The IWC Aquatimer Deep Two is prized for its mechanical depth gauge—a rare feature that sets it apart within the diving watch world. Introduced as an evolution of IWC’s professional dive line, the Deep Two lets you monitor both current and maximum depth directly from your wrist, a nod to IWC’s heritage of engineering watches for demanding underwater environments. Its bold 46mm stainless steel case and signature rotating bezel underscore its tool-watch credentials while offering a substantial presence on the wrist.

The key reference, IW354701, houses the reliable automatic Calibre 30110 and boasts 120 meters of water resistance, balancing everyday practicality with serious diving capability. The dial layout is unique to the Deep Two, with a red depth indicator hand and a separate blue hand for maximum depth—features not found on standard Aquatimers. Collectors value the Deep Two for these specialized complications and its limited production run, which keeps supply relatively tight compared to other IWC divers.

When shopping for a Deep Two, condition of the depth gauge mechanism is crucial, as servicing can be costly and not every independent watchmaker is equipped for it. Original bracelet or rubber strap, box, and papers add to value, but the most critical factor is that the depth gauge functions accurately. Expect price variations based on wear, completeness of set, and recent servicing; models with unworn cases and full accessories command a premium. This is a purposeful, engineering-driven watch for those who appreciate mechanical ingenuity in their dive watches.