SPECIFICATIONS
(1) Quartz frequency: 32,768 Hz (One-second frequency)
(2) Drive method: Step motor
< 3-hands type with Date Display >
Loss/Gain
Caliber
(Monthly
Temperature
rate)
SZ
HE7
±20sec.
-5°C
UN
HT7
±15sec.
-10°C
WC
KJ7
±20sec.
-5°C
< 3-hands type with Date and Day-of-week Display >
Loss/Gain
Caliber
(Monthly
Temperature
rate)
±15sec.
-10°C
UG
HS9
Some models,
Some models,
±20sec.
-5°C
UQ
HE9
±20sec.
-5°C
* When worn around the wrist at 5°C to 35°C
Product specifications may change without notice, for improvement.
Additional Functions
Operating
Second
Reset
Hand
Range
Switch
Control
○
~
+50°C
○
~
+60°C
○
~
+50°C
Additional Functions
Operating
Second
Reset
Hand
Range
Switch
Control
~
+60°C
○
○
~
+50°C
○
○
~
+50°C
Battery
Date
Life
Forwarding
Warning
Device
Device
○
○
-
○
○
○
○
○
-
Day of
Battery
Date
Life
the week
Forwarding
Warning
Forwarding
Device
Device
Device
○
○
○
○
○
-
Battery Life
Battery
(with new
battery)
SR621SW
Approx. 3 years
(SEIZAIKEN)
Some models,
1 piece
2 years
SR920SW
(SEIZAIKEN)
Approx. 5 years
1 piece
SR621SW
(SEIZAIKEN)
Approx. 3 years
1 piece
Battery Life
Battery
(with new
battery)
Approx. 5 years
SR920SW
(SEIZAIKEN)
Some models,
1 piece
3 years
SR621SW
Approx. 3 years
(SEIZAIKEN)
Some models,
1 piece
2 years
7