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or in temperatures outside the operational temperature range for depth measurement (0°
C to 40° C or 32° F ~ 104° F), the depth measurement may be inaccurate, and depths greater
than 1.6 m may be displayed even while the diver is on the surface, resulting in endless
depth measurement and buttons which no longer operate. If this occurs, unscrew the crown
and pull it out to the first click to manually stop the measurement.
*Measurement details are recorded as abnormal measurement. (See “Abnormal measurement/
measurement halt warning” in “NOTES ON USING THE WATCH”) After the measurement is stopped,
push in the crown and screw it in completely.
● By making a new dive, the older of the two log data in memory will be erased. Before diving,
therefore, it is recommended that you make a note of the stored data in your log book, etc.
WHILE DIVING
● Use the watch only within the operational temperature range for depth measurement (0° C
~ 40° C or 32° F ~ 104° F).
● Take care not to hit the watch against hard objects such as rocks.
● While you are underwater, never unscrew the crown or pull it out.
● Check that the DEPTH hand moves properly.
● While you are at a depth of 1.6 m or more underwater, the alarm will not ring so that it is
not confused with the beeping sound for the rapid ascent warning.
● The depth measurement is made every second except while the DEPTH hand is moving.
● While the watch is giving the rapid ascent warning, it will not measure the depth. In some
cases, however, the watch stops the warning momentarily to indicate the depth and then
resumes the warning.
● Depending on the aquatic environment where the watch is used, the beeping sound for the