Casio WSD-F20X User Manual page 67

The inside surface of the watch glass may fog when the watch is exposed
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to a sudden drop in temperature. No problem is indicated if the fogging
clears up relatively quickly. Sudden and extreme temperature changes
(such as coming into an air conditioned room in the summer and standing
close to an air conditioner outlet, or leaving a heated room in the winter and
allowing your watch to come into contact with snow) can cause it to take
longer for glass fogging to clear up. If glass fogging does not clear up or if
you notice moisture inside of the glass, immediately stop using your watch
and take it to an authorized CASIO service center or to your original retailer.
Do not charge the watch if the watch or charger cable is wet. Wipe off all
●
moisture and make sure the watch and charger cable are dry before
charging.
Using GPS (WSD-F20 series only)
You watch can use radio signals from Global Positioning System satellites
to determine your current location and the current time anywhere on the
globe. The process for determining your current location is called
"positioning".
Appropriate and Inappropriate Signal Reception Location
A good location for signal reception is outdoors where the sky is visible and
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not blocked by buildings, trees, or other objects.
You may experience GPS signal reception problems in the areas described
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below.
Where the view of the sky above is narrow
ー
Near trees or buildings
ー
Near a train station, airport, or other congested area, or where there is a
ー
large amount of vehicular traffic
Near railway aerial wires, high-voltage lines, TV towers, etc.
ー
GPS signal reception is not possible in the areas described below.
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Where the sky is not visible
ー
Underground, in a tunnel, underwater
ー
Indoors (Reception may be possible near a window.)
ー
Near wireless communication equipment or other devices that generate
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electromagnetism.
GPS satellites are in constant motion, so your location, the time of day, or
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other factors may cause a delay in the positioning operation or may even
make positioning impossible.
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