The watch is powered by the L792.4 caliber, a hand-wound mechanical movement featuring a flyback chronograph complication and certified by the COSC as a chronometer. The mechanical movement operates at 28,800 vibrations per hour and offers a power reserve of approximately 68 hours.
The round stainless steel case features a bidirectional rotating ceramic bezel and measures 39.50 mm in diameter, 13.40 mm in thickness, and 47.40 mm from lug to lug. The dial is protected by a scratch-resistant sapphire crystal with a multi-layer anti-reflective coating on both sides, while the movement is visible through the transparent, screw-down sapphire crystal case back. It is water-resistant to 10 bar and has a total weight of 154.0 g.
The dial features a refined matte blue finish, against which applied Arabic numerals and polished silver hands—enhanced with Swiss Super-LumiNova—stand out. The layout of the dial includes a small seconds sub-dial at 9 o’clock, a central 60-second chronograph hand, and a 30-minute counter positioned at 3 o’clock.
The bracelet is made entirely of stainless steel (20 mm wide at the lugs). To ensure maximum stability and ease of use, it features a double safety folding clasp equipped with a convenient micro-adjustment system.
Accompanied by packaging and official Longines 5-year warranty.






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