99
Shows the hours, minutes, seconds and date. Can be used to time
events that last up to 12 hours, the results being shown to 1/5
th
of a second.
2-position crown
Adjusting the time and stop seconds
(See page 68)
Quick date adjustment
Push-piece C for adjusting the date is at 10 o’clock. Using the
soft-pointed instrument provided by Longines, press the push-piece
to obtain the exact date. It is necessary to adjust the date at the
end of each month with less than 31 days.
Chronograph standard functions
(See page 83)
L688
Column-Wheel
Hour hand
Date push-piece
Minute hand
30 minute
counter
Date aperture
Chronograph
seconds hand
Return-to-zero
push-piece for the
chronograph hand
and counters
Start/stop push-piece.
Engagement and
disengagement
push-piece for the
chronograph hand
and counters
Small seconds
12-hour counter
1 2
B
C
A
Automatic chronographs L688
2-position
crown
Book_I.indb 99 13.08.19 10:57
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