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PARTS CATALOGUE/TECHNICAL GUIDE
Cal. 7D46A, 7D48A
【SPECIFICATIONS】
Item Cal. No.
7D46A, 7D48A
Movement
Movement
size
Outside diameter
φ３２.０ mm
Casing diameter
φ３０．０ mm
Height
６.１ mm
3 hands (Hour and minute hands: 5-second interval movement, Second
hand: 1-second interval movement), 24-hour hand
Time indication
(Movement intervals)
Calendar
Year indication:
Indication disk for year (7D48A), Year indication hand (7D46A)
Month indication:：Month indicator
Date indication: Big calendar
Driving system
Step motor: 2 pieces ・ Piezoelectric motor (for calendar)
Additional mechanism ●Automatic generating system
●Energy depletion forewarning function
●Overcharge prevention function
●Electronic circuit reset switch
●
Train wheel setting device
●Instant setting device for date calendar
●Automatic power save function
●Time relay function
●Perpetual calendar (Year • Month • Date) up to February 28, 2100
Loss/gain Monthly rate at normal temperature range: less than 15 seconds
Regulation system
Nil
Measuring gate by
quartz tester
Use 10-second gate.
Power generator Automatic generating system
Power
supply
Electricity
storage Unit
(E.S. Unit)
Titanium lithium ion rechargeable battery
Operating voltage range
0.45 ｖ〜2.5 ｖ
Continuous operating
time
Operable time of time relay function: approximately 4 years if fully
charged
Jewels 16 jewels
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