1
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
SEIKO WATCH CORPORATION
SEIKO WATCH CORPORATION
SEIKO WATCH CORPORATION
SEIKO WATCH CORPORATION
