LONGINES SPIRIT PILOT FLYBACK L3.721.4.53.6
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Case
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Shape
Round
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Material
Stainless steel and ceramic bezel
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Glass
Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides
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Case Back
Screw-down and transparent with sapphire crystal case back
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Dimension
Ø 39.50 mm
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Lug distance
20 mm
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Lug-to-lug
47.40 mm
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Thickness
13.40 mm
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Water Resistance
Water-resistant to 10 bar
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Case Specificities
Bi-directional rotating bezel
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Weight
103.0 g
Movement & Functions
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Movement Type
Manual winding
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Functions
Hours, minutes, small seconds at 9 o’clock
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Caliber
L792
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Movement Description
Mechanical movement with manual winding beating at 28’800 vibrations per hour, with a power reserve of approximately 68 hours
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Chronograph
Flyback
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Chronograph Functions
Chronograph mechanism: central 60 seconds hand and 30 minutes counter at 3 o’clock
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LONGINES SPIRIT PILOT FLYBACK L3.721.4.53.6
The LONGINES Spirit Pilot Flyback collection captures the brand’s persistent drive for innovation. This chronograph, with its flyback function, highlights LONGINES’ pioneering expertise in this field. The winged hourglass brand introduced its first flyback-equipped model in the early 1930s and secured a patent for the technology on June 16, 1936, marking a world-first achievement. Designed as a groundbreaking tool for pilots, the flyback complication makes it possible to time successive flight stages, greatly enhancing navigational efficiency. The precision of the LONGINES Spirit Pilot Flyback is powered by an exclusive Longines calibre, fitted with a silicon balance spring and resistant to magnetic fields. This hand-wound mechanical movement is officially certified as a chronometer by the COSC.
