IF YOU WERE going to launch one of your most exciting new dive watches anywhere, you can hardly beat the stunning vistas of Wategos Beach in Byron Bay. Which is exactly the location that Swiss watchmaker Longines chose for the Australian launch of its latest HydroConquest series.

Longines has, for many years, hitched its identity and philosophy of timekeeping at the intersection of sport and and style. So the choice of this particular stretch of coastline was a natural partnership, overlooked by the sweeping eaves of Rae’s on Wategos where guests gathered to celebrate a timepiece that could have taken its design cues from the very ocean before them.

The occasion was also an opportunity to reinforce Longines’ ongoing relationship with the Commonwealth Games, which will be taking place in Glasgow from 23 July until 2 August.

As Official Timekeeper of Glasgow 2026, the brand used the Byron Bay event to host the King’s Baton unveiled by athletes Torrie Lewis and Lachlan Kennedy.

But on to the real star attractions of the event, the watches themselves…

The new timepieces are considered an update of the HydroConquest line, first introduced in 2007. This latest iteration arrives in two case sizes, 39 mm and 42 mm, both in stainless steel, with proportions that feel more resolved than before. The dial range has been expanded to include lacquered blue, black and green options, alongside a frosted blue variant with a sunray texture that shifts subtly in changing light. Ceramic bezels now come in five colours, from standard black and blue through to slate grey, verdant green and a brighter blue tone, offering a wider set of combinations without drifting into novelty.

Legibility has been tightened through applied indices treated with Super-LumiNova, paired with similarly finished hands. A unidirectional rotating bezel has been reworked for improved tactility, drawing on the mechanism developed for the Ultra-Chron Diver, and now includes a luminous marker at zero for clearer underwater reading. Water resistance remains at 300 metres, supported by a screw-in crown and a solid case construction that feels consistent with the watch’s positioning as a daily sports piece.

Inside is the Longines calibre L888.5, a self-winding movement fitted with a silicon balance spring. The use of silicon improves resistance to magnetic fields, a practical consideration given how frequently watches are exposed to everyday interference. Longines states that the movement exceeds ISO 764 standards by a significant margin, while maintaining a power reserve of up to 72 hours. The specification is familiar on paper but remains competitive in this segment, particularly when paired with a five-year warranty.

Bracelet options have also been broadened. Alongside the standard stainless-steel bracelet with micro-adjustment, the collection introduces a Milanese mesh version for the first time. The mesh is fully brushed with polished edges and tapers towards the clasp, offering a different wearing experience without altering the watch’s overall character. A screw-down caseback engraved with a planisphere links the design back to Longines’ history of producing instruments for navigation and exploration.

Lachlan Kennedy and Torrie Lewis.

Dive watch it may be, but Longines have hit the perfect balance of something that can be easily worn as a dress watch, too. Not always an easy feat, but due to an impressively slim build (for a tool watch), there’s scope to wear it with your dinner suit if you’re not regularly taking a plunge in the deep.

The update lands as a proportional tweak to an already resolved dive watch. Case sizing feels better judged, the expanded colour range adds clarity rather than noise, and the new bracelet options improve day-to-day wear. It sharpens a blueprint that already worked, bringing the HydroConquest into a more contemporary, considered space.

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