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84
L440 Quartz chronographs
3-position crown
Simple function
In this function, with the crown in position 1, push-piece A is used to
switch the chronograph status between START and STOP.
After START is pressed, the counter hands will show the measured
time. The 1/100th of a SECOND counter hand will not turn.
After STOP has been pressed, the 60-SECOND, 30-MINUTE and
12-HOUR counter hands will stop running. The 1/100th of a SECOND
counter hand will move to show the one hundredths of a second value.
To measure another time, press push-piece B to return the counters
to zero (RESET). All the hands will quickly return clockwise to their
start point, and the chronograph will switch back to watch mode.
Longines’ quartz chronograph tted with calibre L440 shows the
local time (hours, minutes, small seconds), and the date in a window.
• Quick time zone and date adjustment.
• The hour and minute are displayed by the 2big central hands.
• The small seconds are displayed on the counter at 6 o'clock.
• Rate precision ±0.07 seconds per day (PreciDrive).
• The 12-hour chronograph displays the hour, minute, seconds
and hundredths of a second.
• Quick-moving chronograph counter hands.
• Electronic quartz movement with 5motors and 7 hands.
• Hour with time zone mechanism.
• The time measurement and hand movements are managed by
a micro-controller.
• The movement seconds are controlled by a PreciDrive Watch
Module.
Chronograph 1/100th of a
second hand
12-hour counter
3-position crown
Hour hand
Chronograph seconds hand
Small seconds
2 31
L440
Minute hand
1/100th of a second counter
30-minute counter
Push-piece A Start-Stop
Date aperture
Push-piece B Split
and return to zero
L440
Book_I.indb 84 13.08.19 10:57
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