Cal. 7K52A
2
[SPECIFICATIONS]
Item
Movement
Indication system
Depth measurement part
Time
Alarm part
Hour hand
Minute hand
Small second hand
1/10 m depth hand
Diving time hand
Depth hand (Up to 55m)
Maximum depth hand
(advanced by depth hand)
Alarm hour hand
Alarm minute hand
Driving system
Step motor (4 pcs.)
0
°
C ~ 40
°
C
Influence of temperature change of 20
°
C
Within
±
1 m
Loss/gain
Monthly rate at normal temperature range : less than 15 seconds
Regulation system
Nil
Cal. No.
7K52A
Temperature range providing warrantable
accuracy
Within
±
(displayed value
x 3 % + 0.5 m)
M o v e m e n t
size
Outside diameter
Casing diameter
Height
ø31.0 mm
ø30.0 mm
5.9 mm
•
Electronic circuit reset switch
•
Train wheel setting device
•
Battery life indicator
•
Date calendar
•
Instant setting device for date calendar
•
Full automatic measurement of div-
ing data
•
Recall of log data
•
Depth warning function
•
Single-time alarm function
Additional functions
Accuracy of the depth
measurement
Battery
Measuring gate by quartz tester
In sea water at a stable temperature
(x 1.0)
Jewels
0 jewel
Use 10-second gate.
Voltage : 3.0 V
Battery life is approximately 2 years.
SEIKO CR2016, Maxell CR2016, Sanyo CR2016, Matsushita CR2016,
Eveready CR2016
