Please find common practices on how to take care for your Casio watch:

• Never try to open the case or remove its back cover.
  
• Exposure to very strong electrostatic charge cab cause the watch to display the wrong time and can even damage watch components.
  
• Electrostatic charge can also cause lines, which resemble circuitry, to appear momentarily on the display. This does not have any effect on the function of the watch. You should have the rubber seal that keeps out water and dust replaced every 2 to 3 years. 
  
• Should moisture appear inside the watch, have it checked immediately by your dealer or a Casio distributor.
  
• Avoid exposing the watch to temperature extremes.
  
• Though the watch is designed to withstand normal use, you should avoid rough use or dropping the watch. 
  
• Do not fasten the band too tightly. You should be able to insert your finger between the band and your wrist. 
  
• To clean the watch and band, use a dry soft cloth or a soft cloth moistened in a solution of water and a mild neutral detergent. Never use volatile agents (such as benzine, thinner, spray cleaners, etc).
  
• Avoid allowing the watch to come into direct contact with hair liquids, colognes, sun block creams and other toiletries, which can cause deterioration of the plastic parts of the watch. Whenever the watch comes into contact with these or other toiletries, wipe it off immediately with a dry, soft cloth.
  
• Store your watch in a dry place when you are not using it. 
  
• Avoid exposing the watch to gasoline, cleaning solvents, aerosol sprays, adhesive agents, paint, etc. Chemical reactions with such agents will destroy seals, case and finish. 
  
• Painted finishes can be discolored and worn by very strong pressure, long term rubbing, scraping, friction, etc. 
  
• Some models feature silk screen printing on their bands. Be careful when cleaning such bands so that you do not rub on the printed designs too hard.
  
  For watches equipped with resin bands:
• You may notice a whitish powdery substance on the band. This substance will not harm your skin or clothing, and can be removed by simply wiping it with a cloth.
  
• Leaving the resin band wet with sweat or water, or storing it in a area subjected to high humidity can cause the band deteriorate, cut, or crack. To ensure long life for the resin band, wipe off dirt or water with soft cloth as soon as possible. 
  
  For watches equipped with fluorescent bands and cases:
• Long-term exposure to direct sunlight can cause fluorescent coloring to fade. 
  
• Long-term contact with moisture can cause fluorescent coloring to fade. Be sure to wipe all moisture from the surface of the watch as soon as possible. 
  
• Long-term contact with any other surface while wet can cause discoloration of fluorescent colors. Be sure t keep moisture from fluorescent surfaces and avoid contact with other surfaces.
  
• Strongly rubbing a printed fluorescent surface with another surface can cause the color of the printing to transfer to the other surface.