
Lindbergh Hour Angle Watch - ref L2.678.4.11.2
Description
Framed by its stainless steel case of 47.50 mm of diameter, Longines' Lindbergh watch shows the hours and minutes with a pair of blued steel “Breguet” style hands plus the seconds on a white lacquered dial, protected by a scratch-resistant sapphire crystal. Along with black painted double minute track and Roman numerals, the dial features twelve blue painted Arabic numerals serving to calculate and display longitudes. The seconds hand is synchronized to a radio time signal via the silvered rotating center dial featuring a black painted double minute track and red numerals. The blue and black Arabic numerals engraved on the case's rotating bezel serve to adjust it to daily variations in the equation of time. This model is equipped with an L699 selfwinding mechanical movement beating at 28,800 vibrations per hour and providing 42 hours of power reserve. A hinged and engraved back cover can be lifted to reveal a transparent sapphire plate through which the movement's sparkling dance can be observed. The watch features a brown leather strap. This watch is water-resistant to 30 meters (~100 feet).
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Technical Information
Reference number 
The Lindbergh Hour Angle Watch in stainless steel
L2.678.4.11.2 Man's model
Caliber 
Selfwinding mechanical movement L699 
16 1/2 lines, 24 jewels, 28,800 vibrations per hour
Power reserve of 42 hours
Functions 
Hours, minutes and seconds
Indication of longitude (in degrees and minutes of arc)
Rotating center dial for synchronization of the seconds hand with a radio time signal
Rotating bezel to adjust to daily variations in the equation of time
Case 
Round, in polished stainless steel, 47.5 mm Ø
Hinged engraved back that opens to reveal a transparent sapphire protective plate
Crown 
“Louis XV” style 
Bezel 
Brush-finished stainless steel engraved with blue and black Arabic numerals
Dial 
White lacquer
Black painted double minute track
12 black painted Roman numerals
Degrees shown with blue painted Arabic numerals
Silvered rotating center dial
Black painted double minute track
Red and black painted Arabic numerals
Hands 
Blued steel, “Breguet” style
Water resistance 
To 30 meters (~ 100 feet)
Crystal 
Scratch-resistant sapphire 
Strap 
Genuine brown leather, with “Charleston” clasp and extension
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