L3.788.4.90.6Ref

The Longines HydroConquest L3.788.4.90.6, introduced in 2026 as part of the HydroConquest collection, follows the design direction set by the 2024 HydroConquest GMT. Its round 42mm stainless steel case includes a screw-in crown, unidirectional rotating bezel with blue ceramic insert, 30 bar water resistance, and a scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides; the black polished lacquered dial uses applied indexes (no Arabic numerals), silvered polished hands, and a date. The self-winding L888 calibre with monocrystalline silicon balance spring beats at 25,200 vibrations per hour, has a 72-hour power reserve, and drives central hours, minutes, seconds, and date; it comes on a stainless steel Milanese mesh bracelet with a double security folding clasp and micro-adjustment.