Presentation - Longines L590.2 Maintenance Manual

Round 11 1 I
2'"
movement
Electronic with quartz resonator
Analog display
Caliber L950.2
Jumping center second
Stop-second device
Stepping motor
11 jewels
Calendar showing the DATE through a window in the dial
Correction of time-zones and date by three-position
multifunction stem
Caliber L952.2
Jumping center second
Stop-second device
Correction of time-zones by three-position multifunction
stem
1. Presentation
These new quartz calibers are actually the flattest existing
in the world with center second , calendar and corrector
device for time-zones. They offer the benefit of the latest
theoretical and technological developments in matter of
electronic horology:
-Bipolar rotary stepping motor, LA VET type, insensitive
to the accelerations encountered when the watch is
being worn ,
-quartz oscillator, 32 768 Hz, tuning-fork type, offering
optimum resistance to the influence of shocks ,
Caliber L953.2
Without second
Correction of time-zones by three-position multifunction
stem
Caliber L954.2
Without second
Calendar showing the DATE through a window in the dial
Correction of time-zones and date by three-position
multifunction stem
-integrated CMOS circuit , with logic hand-setting func-
tion (synchronization of the first jump of the second
hand with the closing of the starting contact),
-silver-oxide battery ensuring self-contained operation
for a period exceeding 18 months,
-corrector device for changing time-zones with auto-
matic synchronization of the date, allowing to change
the hours, forwards or backwards, without loosing the
second indication , the minute and the date, when
coming into another time-zone.
3