7
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Cautions
●
The device may charge faster than usual or may not charge at
all in places where the temperature is extremely high or low.
●
The device must be charged every six months for performance
maintenance.
●
Rechargeable batteries have limited life. Their capacity will incre-
mentally decline as per the frequency of use and time consumed.
●
Rechargeable batteries have a different life depending on how
they are stored, used, and where they are used.
●
The use of the device running on batteries in the AC adapter
connection may each affect battery life and the sound volume
and quality.
●
The device power may go off regardless of battery status, subject
to volume and lighting conditions.
●
USB (USB. POWER)
Use the USB cable supplied with to con
nect the AC adapter to charge batteries.