Longines HydroConquest Ref. L3.781.4.56.9

The Longines HydroConquest Ref. L3.781.4.56.9 is a modern dive watch that combines robust tool-watch capabilities with refined styling. Housed in a 41mm stainless steel case, it features a black ceramic bezel, a black sunray dial, and prominent Arabic numerals for a bold, legible look.

Inside beats the Longines Caliber L888, an automatic movement offering a 72-hour power reserve, screw-down crown, and 300 meters of water resistance — making this a serious dive companion that still looks sharp with everyday wear. It comes mounted on a comfortable black rubber strap with a deployment clasp.

This example is from the early 2020s, in 8.5/10 condition, and includes no box or papers.

Key Features:

• Model: Longines HydroConquest Automatic

• Reference: L3.781.4.56.9 (L37814569)

• Case Size: 41mm

• Case Material: Stainless Steel

• Bezel: Black Ceramic, Unidirectional

• Dial: Black Sunray with Luminous Arabic Numerals and Hands

• Movement: Longines Caliber L888 (Automatic, 72-hour power reserve)

• Crystal: Sapphire with Anti-Reflective Coating

• Strap: Black Rubber with Double-Safety Folding Clasp

• Water Resistance: 300 meters / 1000 feet

• Functions: Hours, Minutes, Seconds, Date

• Box: No

• Papers: No

• Year: Circa 2020s

• Condition: 8.5/10 – Light wear, excellent condition