(2) Time standard
Type of quartz
: Tuning fork type quartz crystal
Frequency
: 32,768Hz
Accuracy
: +/-20 s/month worn under normal circumstances
(3) Battery installed
Type of battery : Silver oxide SR920SW or equivalent
(4) Others
Driving systems
: Two-pole stepping motor
(5) Balanceable weight of hand
Minute hand
Max. 1.00 µN
････
m
Second hand
Max. 0.08 µN
････
m
Retrograde hand
Max. 0.14 µN
････
m
(6) Additional Mechanisms
Calendar
: Date disk at 12H(GP00/GP30/GP10) or 3H(GP01/GP11)
Date hand at 12H(GP50)
Calendar correction
: Pull out the crown to the first click position,
turn crown clockwise.
*If the date is set beween 9:00 PM and 2:00 AM,
the date may not change on the following day.
2nd time(GP00/GP01/GP50) : 24 hour hand at 6H (by Retrograde)
