Cautions Regarding Use During Diving
WARNING
When using the watch during diving, always make sure to receive the proper diving instruction and training and use the watch while obeying all rules. Failure to observe these matters can lead to decompression sickness, oxygen toxication or other accidents involving death or serious injury.
*Please refer to these matters along with the section describing “Safety Precautions” on pp.
•In the case of using this watch for diving, always make sure to also use other backup equipment (including a DCIEM dive table, divers watch, residual pressure gauge and water depth gauge) to ensure safety.
•Inspect the watch to make sure that all functions operate properly before diving.
•It is recommended to only use this watch for recreational diving down to a depth of about 18 m (60 ft). Do not attempt to dive below the limit depth of 40 m (131 ft) during recreational diving.
•Always make sure to allow an ample margin for
•Perform adequate safety stops and decompression stops. Even in the case of no- decompression diving, always make a safety stop at 5 m (15 ft) to ensure safety. In addition, in the case the decompression stop display appears, try to stop for a period longer than that indicated on the display.
•Allow for a sufficient rest period after diving in accordance with safety rules. Boarding an airplane or moving to a high altitude without allowing for a sufficient rest period after diving results in the risk of decompression sickness.
PROHIBITED Prohibited Use During Diving
Never attempt to use this watch for diving under the following circumstances.
•When diving is prohibited in the system monitor mode:
···The watch will not switch to the dive mode when [ 
] has changed to NG.
•When the watch has stopped running or an error has occurred (be careful not to bump the watch against hard objects such as equipment or rocks when diving).
•When measuring water depth outside the guaranteed temperature range or at an altitude of 3,000 m (10,000 ft) or higher
···The temperature range for which the water depth measurement accuracy of this watch is guaranteed is from +10°C to +40°C (50°F to 104°F).
···The water depth measurement function does not operate at high altitudes equivalent to 3,000 m (10,000 ft) above sea level or higher.
•When engaged in dangerous behavior or when a situation is judged to be dangerous:
···This watch is not built to function as a preventive or emergency instrument such as for use during marine accidents.
•When using in a helium gas atmosphere (saturation diving, etc.):
···Use under these conditions can cause a malfunction or damage to the watch.
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