Operation Manual

About the Internal Rechargeable Battery
5
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ORTABLE
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EDIA
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LAYER
● Do not use a damaged internal rechargeable battery or charger.
● Do not charge the rechargeable battery for longer than the specified time.
● Charge the battery fully when using the battery for the first time or when using the battery
after a few months of non-use.
● Charge the battery fully, use it until it is completely discharged, and recharge it again to
ensure a long lifetime. Charging the battery after a short use may shorten the lifetime of the
battery. In this case, repeat charging the battery completely and discharging it completely
several times. Then you can use the battery for a longer time.
● Over-charging and over-discharging shortens the life time of the rechargeable battery.
● When the use time of a rechargeable battery is significantly shorter than a new one, replace
the battery with a new one.
● Since a rechargeable battery is an expendable supply, the use time of a battery decreases
over time.
● Take care not to short-circuit the DC converter terminals or the rechargeable battery
(metallic parts) with any conductors such as a necklace, bracelet etc. There is a danger of
electric shock or fire.
Safety Precautions
Warning
Take care when using this unit while walking. There is a danger of accidents.
● Do not operate functions which require your attention for some time while driving.
To configure functions that may require your attention for some time, stop your car before doing so.
Avoid watching the screen for long periods of time while driving. This may cause an accident.
● Do not turn the volume up excessively. Adjust the volume so that the sound of other cars and
emergency sirens can still be heard. If you cannot hear the sounds of your surroundings while
walking, this may cause an accident.