Casio 4390 Manual page 68

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Natural Leather and Imitation Leather Bands
• Allowing the watch to remain in contact with other items or storing it together with other
items while it is wet for long periods can cause the color of the other items to transfer
to the natural leather or imitation leather band of the watch. Be sure to dry off the watch
thoroughly before storing it and make sure it is not in contact with other items.
• Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for long
periods or failure to clean dirt from a leather band for long periods can cause it to
become discolored.
Important!
• Subjecting a natural leather or imitation leather band to rubbing or dirt can cause color
transfer and discoloration.
Metal Components
• Failure to clean dirt from a metal band can lead to formation of rust, even if the band is
stainless steel or plated. If the watch is exposed to sweat or water, wipe it thoroughly
with a soft, absorbent cloth and then store it in a well-ventilated location to dry.
• To clean the band, use a soft toothbrush or similar tool to scrub it with a weak solution
of water and a mild neutral detergent. Take care to avoid getting solution on the watch
case.
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