1. MOVEMENT DIMENSIONS
·
Outside diameter
ψ
23.70mm { 22.60mm
(12H~6H)
x 22.60mm
(3H~9H) }
·
Casing diameter
ψ
23.30mm { 22.10mm
(12H~6H)
x
21.40mm
(3H~9H) }
·
Total height
3.45 mm
2. BASIC FUNCTION
·
Jewels
2 jewels
·
Regulation device
Nil
·
Accuracy
± 15 seconds per month at normal temperature range
·
Battery life
Approx. 2 years
·
Operation temperature range
From - 5
℃
to + 50
℃
·
Antimagnetism
≧
1600 A / m
( direct current magnetic field )
·
Shock resistance
On equal level with general quartz movement
·
Hands
Regulation hands unbalance
Hour
: Less than 0.50µN·m ( 50mg·mm )
Minute
: Less than 0.80µN·m ( 80mg·mm )
Second
: Less than 0.30µN·m ( 30mg·mm )
3. OSCILLATOR
·
Type of quartz oscillator
Tuning fork
·
Frequency of quartz oscillator
32,768 Hz
4. BATTERY
·
Type
Silver oxide battery
·
Nominal voltage
1.55 V
·
Size
ψ
9.5 x t 2.0 ( mm )
·
Recommended battery
SR920SW ( SEIZAIKEN )
5. DIAL FIXED METHOD
Dial legs fitted with holes on the main plate
6. TEST OF ACCURACY
·
Equipment to be used
SEIKO Quartz Tester QT - 99
Greiner Quartz Timer - C
Witschi Q-Tester 4000
·
Duration of measurement
10 seconds
·
Microphone to be used
Electromagnetic detection type
* All specifications are subject to change without notice.
SII Products
Version: 1
CAL. VH31A 10 ½ Ligne Quartz Movement
Three Hands (1/4 Center Second)
MOVEMENT SPECIFICATION - 1
