The important numbers
At 39mm across, 11.7mm thick and 48.1mm from lug to lug, this HydroConquest sits in the useful middle ground between compact vintage proportions and the visual weight expected of a modern dive watch.
- 39mm stainless-steel case
- 11.7mm thickness
- 48.1mm lug-to-lug
- 300 metres of water resistance
- Approximately 72 hours of power reserve
- Starting price reported at US$2,200
Why it matters
Longines is competing on completeness rather than novelty. The ceramic bezel, silicon balance spring, useful reserve and bracelet micro-adjust address the details that determine whether a sports watch becomes an everyday watch.
The conservative design will divide collectors. Its familiarity makes it versatile, but anyone seeking a strong, singular design identity may prefer the more characterful Legend Diver or an independent alternative.
The Minute Track verdict
Try it on if your priority is a well-sized, capable Swiss diver around the £2,000 mark. The specification is compelling; the final decision rests on whether its intentionally familiar visual language feels timeless or too safe on your wrist.