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The battery working time is too short
The duration of the lithium battery varies with environmental temperature
changes and the service conditions. If the environment temperature is too
low or too high, the duration of the battery will be affected. It is
recommended to use this device at normal temperature.
Battery consumption varies depending on if the brightness and on time of
the screen, the volume level of the loudspeaker as well as the operation
status of the central processor (CPU). To save battery, please refer to
Power saving mode section of this menu.
No sound from earphone
Check if the volume setting is adjusted to 0.
Check whether the audio file is damaged and try to play other audio files
to confirm. In the case if the audio file is damaged, it may cause severe
noise or staccato.
Can not copy files.
Check if the device is connected to the computer properly.
Check if the USB cable is working.
Check whether the memory capacity available is enough for storage of the
copying files.
Made in China
Specifications are subject to change without prior notice. No part of this
document may be reproduced or transmitted in any form or by any mean,
electronics or mechanical including photocopying and recording or translated to
another language for any purpose