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.