Swiss Precision, Built for the Deep

The Longines HydroConquest Black Dial (L3.781.4.05.6) is Longines' definitive sport diver — a watch that has earned its reputation over decades as one of the best-value Swiss Made dive watches on the market. At 41mm with a bold black dial and a polished-and-brushed stainless steel bracelet, it strikes the perfect balance between sport capability and everyday wearability.

Dial & Bezel

• Matte black dial with luminous applied indexes and hands — clean, bold, and instantly legible underwater
• Unidirectional rotating dive bezel — ceramic insert for scratch resistance and precise elapsed-time tracking
• Date window at 3 o'clock
• Sapphire crystal with anti-reflective coating for superior clarity at depth
• Water resistant to 300M / 984FT
• Swiss Made

Movement

• Longines automatic movement — self-winding, COSC-adjacent precision, and built to last a lifetime

Case & Bracelet

• 41mm stainless steel case — substantial and sport-ready without being oversized
• Polished and brushed stainless steel bracelet with fold-over deployant clasp — secure, comfortable, and dive-ready

The HydroConquest sits in a rare sweet spot: Swiss Made quality, 300M water resistance, and a Longines movement — all at a price that leaves room for the next watch in your collection. Whether you're logging dives or wearing it daily, the HydroConquest delivers without compromise.