Seiko 6R24A Technical Manual

PARTS LIST / TECHNICAL GUIDE
[SPECIFICATIONS]
Item
• 3 hands ( hour, minu te and s e c ond
hands)
• Date/Day indication
• Power reserve indicator
Driving system
Time indication
Additional function
Normal position
Crown operation
st click position
2nd click position
Vibration per hour
Daily rate worn
Loss/Gain
on the wrist at
t e m p e r a t u r e -
range between
5 °C and 35 °C)
S t a n d a r d r a t e
for measurement
Regulation system
Lift angle of the escapment
Power reserve
Number of jewels
Automatic Cal. 6 R24A
Cal. No.
Automatic winding with manual winding mechanism
• 3 hands (Hour, Minute and Small Second hands)
• Calendar (day / date retrograde hands)
• Power reserve indicator
• Retrograde day indication function (3 o'clock position)
• Retrograde date indication function (6 o'clock position)
• Second hand stop function
• Day / date correction function
Manual winding (clockwise only)
Date setting (counterclockwise) / Day setting (clockwise)
Time setting (Hour and minute)
Second hand stop
28,800 (8 beats per second)
Between + 25 and - 5 seconds
Mainspring
wind up status
Testing positions
Measurement
(daily rate in
seconds:s/d)
ETACHRON system
52 °
From fully wound to stoppage: Approximately 45 hours
3 jewels
6R24A
Movement size
• Diameter Outside:
Casing:
• Height:
(9 o'clock position)
Fully wind up
Dial upward: 6 o'clock
T0 (CH) at the top
± 0 s/d
± 5 s/d
/30
Ø 27.4 mm
Ø 27.0 mm
6.5 mm
After 24 hours
from fully wind
up
Dial upward :
9 o'clock
T24 (CH)
at the top
(Isochronism
± 5 s/d
fault: T24-T0)
± 0 s/d