Casio GB-6900B User's Manual For Watch Functions page 62

•
Do not use this watch for scuba diving or other types of diving that requires air
tanks.
• Watches that do not have WATER RESIST or WATER RESISTANT marked on
the back cover are not protected against the effects of sweat. Avoid using such
a watch under conditions where it will be exposed to large amounts of sweat or
moisture, or to direct splashing with water.
•
Even if a watch is water-resistant, do not operate its buttons or crown while it is
submersed in water or wet.
•
Even if a watch is water-resistant, avoid wearing it in the bath or in areas where
detergents (soap, shampoo, etc.) are being used. Such conditions can reduce
water resistance.
•
After submersion in seawater, use plain water to rinse all salt and dirt from the
watch.
•
To maintain water resistance, have the gaskets of your watch replaced periodically
(about once every two or three years).
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