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Only Use the Specified Secondary Battery
• Never use a secondary battery other than the genuine secondary battery used in this
watch. Even if another type of secondary battery is installed in the watch, the watch
structure does not permit its operation. In cases in which a different secondary
battery such as a silver battery is forcibly installed in the watch and charged,
overcharging may occur that will eventually cause the secondary battery to rupture.
This can result in the risk of the watch being damaged or injury to the wearer.
• When the secondary battery is replaced, always make sure to use the specified
secondary battery.
8. Replacing the Secondary Battery
Unlike ordinary silver batteries, the secondary battery used in this watch does not have
to be periodically replaced due to repeated charging and discharging.
9. Precautions
WARNING: Water-resistance performance
• Water-resistance for daily use (to 3 atmospheres): This type of watch is water-resistant to
minor exposure to water. For example, you may wear the watch while washing your face;
however, it is not designed for use underwater.
• Upgraded water-resistance for daily use (to 5 atmospheres): This type of watch is water-
resistant to moderate exposure to water. You may wear the watch while swimming;
however, it is not designed for use while skin diving.
• Upgraded water-resistance for daily use (to 10/20 atmospheres): This type of watch may be
used for skin diving; however, it is not designed for scuba or saturated diving using helium
gas.
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