Longines L442 Manual Del Usuario página 9

60-second counter
Push-piece C
30-minute counter
Hour hand
60-second counter
(split-seconds hand)
Small seconds
When used as a watch, the Longines L442 QUARTZ chronograph
indicates a local time (hour, minute and small seconds), plus the date
in a window, and features quick time zone adjustments.
In its chronograph function, this model can time events lasting up
to 30 minutes, while displaying the results to the nearest 1/10th of
a second. PowerDrive quick-moving chronograph counter hands.
PreciDrive rate precision, earning COSC certii cation.
PreciDrive calibre 251.294
• Electronic quartz movement with 5 motors and 7 hands.
• Hour with time zone mechanism.
• The time measurement and hand movements are managed
by a microcontroller.
• The movement seconds are controlled by a PreciDrive Watch
Module, which transforms this calibre into a chronometer
with a rate precision exceeding the COSC requirements.
Longines_ModeEmploi_Livret1.indb 9
Minute hand
1/10
Push-piece A
1 2 3
Push-piece B
Date window
L442
Timing mode
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 60-SECOND and SPLIT-SECONDS counters run simultane-
ously, indicating the measured time in seconds.
After STOP has been pressed, the 60-SECOND, SPLIT-SECONDS and
30-MINUTE counter hands will stop running. The 1/10th of a SECOND
counter hand displays the value in tenths of a second as it runs.
To measure another time, press push-piece B to return the counters
to zero (RESET). All the hands will quickly return clockwise to the start
point, and the chronograph will go back to watch mode.
L442
Quartz chronographs
th
of a second counter
3-position crown
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