Seiko 7K52 User manual

English
11
DIVING MEASUREMENT
●The watch measures the current depth, maximum depth, diving time and time submerged,
and indicates them with the four hands for diving measurement and the small hands at the 6
o’clock position.
●Current depth: Indicated by DEPTH and 1/10 m hands
in 0.1 m increments from 1.6 m up to
55.0 m. (Ex. 12.5 m)
●Maximum depth: Indicated by MAX. DEPTH hand
in 0.5 m increments from 1.5 m up
to 55.0 m. (Ex. 20.5 m)
●Diving time: Indicated by DIVING TIME hand up to
12 hours.
(Ex. 17 minutes)
●Time submerged: Indicated by small hands at the 6
o’clock position. (Ex. 10:10)
HOW TO READ THE MEASUREMENTS

English
12
0.0 m
1.6 m
55.0 m
Diving measurement starts when
you descend to 1.6 m or more.
Never operate the crown while
the measurement is in progress.
HOW TO USE THE DIVING FUNCTION
Before diving, check the hands
for diving measurements.
Press button B repeatedly.
Log data
of the
last dive
Log data of
the dive
before last
Diving hands
at “0”
position

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13
Extra measurement range warning !
Rapid ascent warning !
➡
Diving measurement stops when
you ascend to less than 1.6 m.
Case I
Case II
Case I : If you stay at less than 1.6 m underwater
for more than 10 minutes, the dive is
considererd to be completed.
Case II : If you descend again to 1.6 m or more
underwater before 10 minutes have
elapsed, the two dives are considered
inseparable, and the measurement is
resumed.

English
14
●Before starting a dive, be sure to check that the hands for diving measurement are reset to “0” position.
If not, reset them following the procedure in “ADJUSTING THE HAND POSITION BEFORE DIVING”.
●When you ascend to a depth less than 1.6 m underwater and the watch stops measuring the depth,
the DEPTH and 1/10 m hands indicate “0.0 m”.
●If you descend again to a depth of 1.6 m or more underwater before 10 minutes have elapsed, the time
elapsed after the depth measurement is stopped is added to the measured diving time.
●For 10 minutes after a dive, all the three buttons will not work.
●After 10 minutes have elapsed following a dive, recall of log data is made possible by pressing button
B.
Beep
Beep
Warning sound beeps intermittently for
about 10 seconds and 1/10 m hand
moves back and forth.
WARNING FUNCTION FOR DIVING
RAPID ASCENT WARNING
●The watch monitors the change of depth at 10 second intervals and gives a warning if
the diver ascends more than 3 m in 10 seconds, that is, at a rate of more than 18 m per
minute.