PARTS CATALOGUE / TECHNICAL GUIDE
Cal.8T68A
8T68A
Driving system
Step motor 2 pieces
Additional function
Crown
Normal position
Free
operation
1st click position
Date setting (clockwise)
2nd click position Time setting, Resetting the circuit
Loss/Gain (Monthly rate)
Less than 15 seconds at normal temperature range
Frequency of crystal oscillator
32,768 Hz
Operational temperature range
-5
℃
~ +50
℃
Regulation system
Nil
Gate time for rate measurement
Use 10-second gate
Current consumption
Coil resistance
・
4002054
（
Coil block A): 1.45 - 1.65KΩ
・
4002055
（
Coil block B): 1.65 - 1.85KΩ
Power
Battery No.
SR936SW (Silver oxide battery)
supply
Battery voltage
1.55V
Battery life
Approximately 3 years
Jewels
0 jewel
1/19
Cal. No.
Item
・
Stopwatch function up to 60 minutes in 1/5 second
・
Date display with quick correction.
・
Energy depletion forwarding function
(The second hand moves at two-second intervals.)
・
Movement: Less than 2.7μA
・
Circuit block: Less than 0.7μA
Movement Size
・
Outside diameter:
30.8 mm
・
Casing diameter
29.0 mm
・
Height
：
5.1 mm
・
3 Hands: Hour, Minute, and 1/5 second chronograph hand
・
Small Second : Small second hand(6H), Minute chronograph hand (10H),
and 24-hour indicator(2H)
