indicates a situation against which you need to exercise caution. The example shown here indicates you should take precaution against electric shock.

indicates information about an action that you should not perform. The specific action is indicated by the figure inside the circle. The example shown here means disassembly is prohibited.

indicates information about an action that you must perform. The specific action is indicated by the figure inside the circle.

Be sure to observe the points below when using this watch.

Failure to do so creates the risk of heat generation, fire, and explosion.

Do not throw the watch into fire or expose it to heat.

Do not try to modify the watch, step on it or otherwise subject it to strong impact.

Do not place the watch inside a microwave oven, drier, pressurized container, etc.

Do not try to take the watch apart.

Do not use, charge, or store the watch near an air conditioner, on an electric carpet, in a location exposed to direct sunlight, in a motor vehicle parked in the sun, or any other location subjected to high temperatures.

Doing so creates the risk of heat generation, fire, and explosion.

Use only the prescribed method for charging.

Use of a charging method other than the method specified for this watch creates the risk of heat generation, fire, and explosion.

Do not try to remove the rechargeable battery from the watch.

Doing so creates the risk of heat generation, fire, and explosion. If the rechargeable battery is ever accidentally removed from the watch, take care to ensure that it is not swallowed. Special care is required when young children are present. Should a battery ever be swallowed, contact a physician immediately. Swallowing a battery can rapidly cause chemical burns, mucosal tissue penetration, and other serious problems that create the risk of death.

Always request rechargeable battery replacement from a CASIO Service Center or your original retailer.

Use of a non-specified type of battery or improper replacement creates the risk of battery overheating, fire, and rupture.

Do not use this watch while scuba diving.

This watch is not a diving watch. Improper use of this watch can lead to serious accident.

If radio wave interference or other problems are generated in other equipment when using this watch, enter the watch Airplane Mode or turn off the watch.

This watch may affect operation of or cause problems with the other equipment, which creates the risk of accident.

In a medical facility or aircraft, be sure to obey instructions provided by staff or flight personnel. Do not use this watch in any area where its use is prohibited.

Electromagnetic waves and other signals emitted by this watch may affect instrumentation, which may create the risk of accident.

People fitted with a cardiac pacemaker or any other implantable medical device should keep this watch and charger cable away from their body.

Radio waves and magnetism can affect the operation of cardiac pacemakers and other medical devices. Should you or another person ever start to feel any abnormality, immediately move the watch and charger cable away and consult a physician.

Enter the watch’s Airplane Mode or turn off the watch when on a crowded train or in any other crowded location.

Failure to do so creates the risk of malfunction of a nearby cardiac pacemaker or other medical device due to radio interference.

Continued use of the watch while it is smoking, emitting foul odor, generating heat, or otherwise demonstrating abnormal symptoms creates the risk of fire and electric shock. Immediately take the actions below.

1. If a charging is in progress, unplug the USB cable from the watch.

2. Turn off power.

3. Contact an authorized CASIO Service Center.

Regardless of the information displayed by the watch, be sure to keep aware of your physical condition and keep your exertion level within your own personal capabilities.

Whenever working out while using the watch to monitor your heart rate or to perform any other type of training measurement, take care that you do not over-exert yourself in order to achieve a particular value or reading. Overexertion creates the risk of unforeseen accident. Always keep your workouts well within your physical capabilities.

Should you ever feel ill or otherwise sense a change in for physical well-being, immediately consult a physician.

When charging with the USB-AC adaptor and charger cable, be sure to observe the precautions below in order to avoid the risk of heat generation, fire, explosion, and electric shock.

Use only the charger cable that comes with the watch.

Never try to use the charger cable to charge another device.

Never use a USB-AC adaptor that does not meet the specified adaptor specifications.

Do not use a power source that has a different voltage and/or frequency from those specified for this watch.

Do not use a power outlet that is shared by multiple devices.

Do not use the watch while covered with bedding or a blanket, and do not use it near a heater.

Do not place any heavy object on the USB-AC adaptor and/or charger cable, and do not charge with the charger cable while it is bundled.

Do not expose the USB-AC adaptor and/or charger cable to heat, do not try to modify them, and do not allow them to become damaged.

Do not subject the USB-AC adaptor and/or charger cable to excessive bending, twisting, or pulling.

Always keep the charger cable connector and/or the USB-AC adaptor power plug clean. Wipe away any dust that collects on them.

Use a dry cloth to clean the USB-AC adaptor and charger cable. Do not use detergent for cleaning.

Do not touch the USB-AC adaptor and/or charger cable while your hands are wet.

Make sure no liquid (water, sports drink liquid, seawater, animal urine, etc.) gets on the USB-AC adaptor and/or charger cable during use.

Do not charge while the watch is wet.

Never touch the watch, USB-AC adaptor, or charger cable during an electrical storm.

Should the watch, USB-AC adaptor, or charger cable become damaged, immediately stop using them and unplug the USB-AC adaptor from the power outlet. Next, contact an authorized CASIO Service Center.

Continued use of a damaged item creates the risk of fire and electric shock.

Do not charge the watch while wearing it on your wrist.

Doing so creates the risk of low-temperature burn injury.

Do not press on the display with undue force or subject it to strong impact.

Doing so can break the display glass.

Should the display glass break, do not directly touch the liquid inside it.

Display liquid can cause skin irritation.

Should display liquid ever get into the mouth, consult a physician immediately.

Should display liquid get in your eyes or on your skin, rinse with clean water and then contact your physician.

Make sure you are in a safe place before viewing the watch's display.

Failure to do so creates the risk of personal injury and accident. Looking at the watch while running or jogging on the open road, while riding a bicycle, or operating a motor vehicle can lead to accidents. Take care to avoid running into others.

Take care to avoid conditions that cause skin rash.

The watch and the band come into direct contact with the skin, so the usage conditions below may cause skin rash.

Metal or leather allergies

Dirt, rust, or sweat on the watch or band

Poor physical condition, etc.

Remove the watch from your wrist before going to bed.

Failure to do so creates the risk of unexpected personal injury, and/or allergic skin rash.

Be sure to keep the case and band clean at all times.

Wash the case and band with tap water or other clean water to remove sweat and dirt, and then wipe dry with a soft cloth.

Sweat and/or dirt on the watch case or band can cause skin rash or other problems. Should you ever notice any skin abnormality, immediately stop using the watch and consult a physician.

Before picking up or otherwise coming into contact with a child, remove the watch from your wrist.

Failure to do so creates the risk of personal injury to children and/or allergic skin rash.

Young children should be allowed to use this watch only under the supervision and guidance of an adult. Store the watch out of the reach of small children.

Keep the charger cable away from magnetic cards (credit cards, cash cards, prepaid cards, magnetic back tickets, etc.)

The magnetic plug end tip of the charger cable can render a magnetic card or recording medium unusable if they get too close to each other.

Be sure to observe the precautions below when using the charger cable.

Failure to do so creates the risk of malfunction.

Do not apply undue force to, insert items into the plug, or forcibly push the plug in.

Do not leave keys, necklaces, paper clips, or other metal items in close proximity to the charger cable plug.

Doing so can cause the metal to affix to the magnetic plug and cause a short.

When not using the charger cable, unplug the AC adaptor from the power outlet.

The sensor in the center of the back cover emits an LED light. Avoid looking directly into the light.

When charging with the USB-AC adaptor and charger cable, be sure to observe the precautions below in order to avoid the risk of heat generation, fire, explosion, and electric shock.

Plug the USB-AC adaptor into the power outlet as far as it will go.

Unplug the USB-AC adaptor from the power outlet before leaving it unattended for long periods, such as when going on a trip, etc.

At least once a year, use a dry cloth to clear away any dust build-up between the prongs of the USB-AC adaptor plug.

Do not use or store the USB-AC adaptor and/or charger cable in areas where large amounts of moisture or dust are present, in food preparation areas or other areas where there is exposure to oil smoke, or areas where temperatures are high.

If the watch does not charge within the normal charging time, stop charging.

Continued charging creates the risk of heat generation, fire, and explosion by the built-in battery.

For details about the charging time, see Main Specifications.

Be sure to keep the case and band clean at all times.

A dirty or rusty case or band can soil the sleeve of your clothing. Rust tends to form easily after the watch is exposed to seawater and then left without cleaning.