Seiko 7d46A Technical Manual

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