Longines HydroConquest 2026 Redesign (39mm & 42mm)

Longines refreshes one of its most popular dive collections with the redesigned Longines HydroConquest, introducing updated aesthetics alongside technical refinements. Available in both 39mm and 42mm case sizes, the new models feature a broader range of dial and bezel combinations, enhanced ergonomics, and improved functionality. With upgraded materials such as ceramic bezels and a refined movement resistant to magnetism, this latest evolution reinforces the HydroConquest’s position as a capable and accessible modern dive watch.
The redesigned HydroConquest is offered in stainless-steel cases measuring either 39mm or 42mm in diameter, both sharing a thickness of 11.70mm. The case construction maintains a sporty yet refined profile, combining brushed surfaces with polished accents to enhance its contemporary look. A ceramic unidirectional rotating bezel surrounds the dial, now available in five colour options, adding both durability and visual variety.On the reverse, the screw-down caseback is engraved with a refined Longines logo alongside a planisphere motif. This detail connects the watch to the brand’s broader narrative of exploration, while also aligning with design elements introduced in recent HydroConquest GMT models.At 3 o’clock sits a screw-in crown that ensures robust sealing and durability under demanding conditions. A sapphire crystal with multi-layer anti-reflective coating on both sides protects the dial, enhancing clarity in all environments. Water-resistance can reach up to 300 meters (1,000 feet).The dial has been reworked with a cleaner, more contemporary layout while maintaining the strong legibility expected of a professional dive watch. Available in polished lacquered finishes in blue, black, and green, as well as a frosted blue sunray variant, the collection offers a wide range of visual expressions.Applied hour markers provide structure to the display, while the overall layout remains balanced and easy to read. The colour-matched dial and bezel combinations allow for both classic and more expressive configurations, depending on the chosen model.Depth is enhanced by the contrast between dial textures and the ceramic bezel, while a Super-LumiNova capsule at the “0” marker ensures precise dive timing. The hands and indices are treated with Super-LumiNova, guaranteeing strong visibility in low-light and underwater conditions.

Longines HydroConquest

The “Longines HydroConquest“ (View All References) is powered by the base self-winding mechanical movement, caliber L888.5 with 25,200 vph. It comes equipped with a silicon balance spring and anti-magnetic components exceeding ISO 764 standards. Power reserve can last up to 72 hours, when fully wound.
Mounted on this watch is either a stainless-steel bracelet with H-shaped links secured by a double-folding safety clasp with a four-position micro-adjustment system, or a Milanese mesh bracelet with an adjustable clasp for enhanced comfort.
The updated bracelet design improves ergonomics and wearability, ensuring a secure fit whether worn casually or in more demanding environments.