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Hints and Tips
If a problem does occur, it may often be due to something very minor� The following table
contains various tips�
Cannot power on
Files cannot be
GB
downloaded
No sound from the
earphones
The buttons do not
work
The MP3 player does
not function properly
Specifications
Model
USB Version
Audio Format
MP3 bit Rate
WMA bit rate
S/N rate
Dynamic range
Distortion
Battery
EQ
Size (including clip)
Weight
Frequency response
Dynamic current
Power off current
Storage condition
Working condition
Power out
Power supply
We continually strive to improve our products� Specifications and features may change
without prior notice�
GB-10
• The battery may be exhausted� Connect the USB cable and plug
into the USB port of a computer which is turned on�
• Check if the driver is installed correctly in the computer�
• Check the connection between the MP3 player and computer�
• Check that the volume is on�
• Check the connection between the earphones and MP3 player�
• Check if the music file format is supported by the MP3 player�
• The key may be locked� Press and hold the
deactivate the lock function�
• Use a paper clip to press the reset button to turn the MP3 player
off� Press and hold the
DMP470E / DMP470PE
1�1, 2�0
MP3/WMA/WAV
8~320Kbps
5Kbps-384Kbps
>80dB (30K filter)
>80dB (1kHz)
<0�2%
MP3/WMA/WAV playback around 8hrs
Normal, Jazz, Rock, Classic, Pop, Bass
(LxWxH) 45x34�4x16�8mm(include clip)
Around 16�94g
20Hz~20kHz
<18mA
<0�3mA
Humidity <90%, -20~60°C
Humidity <80%, 0~45°C
2x1mW (16 ohm load)
DC 5V
100mA
button to
button to turn it on again�
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