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PRUNUS J-908 Radio Manual

Thank you for purchasing the PRUNUS J-908 AM radio/mp3 player.  In order to get the best from the radio please 
read this manual carefully before using it and take special notice of the section on maintenance.

◆Remove the batteries if you decide not to use the radio for some time.  Batteries left in electrical equipment 

may corrode and damage it;

◆Don’t let the radio get wet and don’t use it in a moist environment keep it out of the rain and use carefully in 

bathrooms and kitchens;

◆Do not place potentially damaging objects such as liquid-filled containers or lighted candle on top of the 
radio. Keep the radio, and the battery pack, away from sources of heat such as radiators, hot water pipes or fires. 
Do not leave it in full sunlight;
◆Make sure that solvents, such as white spirit, paraffin or petrol and not spilt onto the radio;

Just place the silver key (on the end of the strap) inside the jack socket, now, the radio stands up easily!

1. Power switch ON/OFF

2. Volume knob

3. DC 5V charging/AUX in jack
4. Charging indicator/LED flashlight
5. USB port
6. LED flashlight switch
7. Earphone output
8. TF card slot
9. Previous MP3/channel, rewind

10.Play/Pause/Scan and memory radio channels

11. Next MP3/channel, fast-forward

12. Repeat

13. Mode switch among USB/TF/AUX/ FM/ AM(MW)

14. 0-9 number buttons

15. Number 2/Next folder
16. Number 1/Previous folder

17. Telescopic aerial

Charging method: Plug the big end into the USB jack of computer or USB power adapter, and plug the small end 
into the <③DC 5V charging jack/AUX in jack> of this unit.
Charging indicator: Charge the radio when the signal “     ” is flashing.When charging, the <④Charging indica

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tor/LED flashlight> will light on with RED light (the charging time is 3-5 hours); when it is fully charged, the 
charging indicator will turn from RED to Green.
◆Please use standard DC5V/500-1000mAh charger (or other devices can supply this type of power) to charge it, 
or it may damage the radio. (Also, our Prunus Store has the standard DC5V/500-1000mAh charger on sale, if you 
need it, you can search for it on Amazon by key words ”prunus adapter”.)

1.Push <①Power switch ON/OFF> to the power-on position.

2.Press <⑬Mode switch among USB/TF/AUX/FM/AM> to switch to “AM” or “FM” mode.

3. How to search and store channels?

1) Automatic Search: Press <⑩Play/Pause/Scan and memory radio channels> for 3 seconds to automatically 

search, store and number the channels around you. Please note that the order of the channels can not be 

changed manually; 

2) Manual Search: Press <⑭0-9 number buttons> to 

search and select your favorite channels. For example, 

pressing 8 + 9 + 8, will jump to 89.8MHZ channels. 

4. How to select the stored channels?

1) Short press <⑨Previous MP3/channel, rewind> or <

⑪Next  MP3/channel,  fast-forward>  to  select  the 

channel you want to listen to;

2)  Number  buttons  0-9  can  be  used  to  select  one 

specific  channel  (For  example,  continuously  press 

buttons 1+5 to select the 15th radio channel, but if the 

total numbers of the radio channels are not more than 

15, it will play the current radio channel).

5. Turn the <②Volume knob> to adjust the volume.

6.Press<⑩Play/Pause/Scan  and  memory  radio 

channels  >  to  pause  the  current  playing;  press  this 

button again will resume the playing;

◆When  searching  for  the  FM/AM  channels,  please 

extend  and  rotate  the  <⑰Telescopic  aerial>  for  the 

best reception.

◆In  order  to  get  better  reception,  when  using  the 

radio indoors, please approach it to the window and 

do  your  best  to  keep  it  away  from  the  electronic 

devices (such as computers, TVs, refrigerators, mobile 

phones, etc).

1.TF card/Flash drive playback:

1)Push  the  <①Power  switch  ON/OFF>  to  the 

power-on position.

2)Insert  the  TF  card  or  USB  flash  drive  loaded  with 

MP3 format files into the <⑧TF card slot> or <⑤USB 

port>.  Once  mp3  files  are  detected,  it  will  play 

automatically.

3)Turn the <②Volume knob> to adjust the volume;

4)Short press <⑨Previous MP3/channel, rewind> or <

⑪Next MP3/channel, fast-forward> to select the song 

you  want  to  play.  Long  press  the  <⑨Previous 

MP3/channel,  rewind>  or  <⑪Next  MP3/channel, 

fast-forward>to rewind or fast-forward;

5)Short Press <⑩Play/Pause/Scan and memory radio 

channels> will pause playing the current track; Short 

press this button again will resume playing this track.

6)  Press  number  buttons  0-9  to  select  one  specific 

mp3 (For example, continuously press buttons 1+6+8 

to select the 168th mp3, but if the total numbers of the 

MP3 files are not more than 168, it will play the current 

MP3; 

7)For the <⑫Repeat>, A.the first press for ONE, repeat

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ing the current MP3; next press for FOLD, repeating the 

MP3 of the current folder; one more next press for ALL, 

repeating all the MP3; B. Long press <⑮Number 2 / 

Maintenance

Radio reception

Power Supply 

Functional Components

How To Make The Radio Stand?

Next folder>or<⑯Number 1/Previous folder> to switch to 

Next folder or Previous folder;

8) Press the <⑬Mode switch among USB/TF/AUX/FM/AM > 

will change to other mode.

◆The radio can only read MP3 files.

◆If your flash drive/TF card can’t be read, please make 

sure they are in FAT32 Format, as the radio can’t read flash 

drive/TF card in NTFS Format. 

2.Play by AUX: 

1) Press <⑬Mode switch among USB/TF/AUX/FM/AM> to 

switch to “AM” or “FM” mode.

2)Insert  one  end  of  the  AUX  cable  into  <③DC  5V 

charging/AUX  in  jack>  of  the  radio,  and  insert  the  other 

end  into  the  earphone  jack  of  the  mobile  phone  or 

computer, and then open the music software/app to play 

music;

3)Turn the <②Volume knob> to adjust the volume;

4)Press <⑩Play/Pause/Scan and memory radio channels> 

to pause the current playing; press this button again will 

resume the playing;

5) Press the <⑬Mode switch among USB/TF/AUX/FM/AM > 

will change to other mode.

◆When  in  AUX  mode,  only  <②Volume  knob>,  <⑩Play  

/Pause,  scan  and  memory  radio  channels>,  <⑬Mode 

switch among USB/TF/AUX/FM/AM> works, other buttons 

can not be operated

Considering to many users who purchase our radio also 

for emergency use, we designed a flashlight <④Charging 

indicator/LED flashlight> with it. Please press <⑥LED 

flashlight switch> to turn ON or OFF the flashlight.

◆If the radio fails, please scan this QR code.Then click “

Ask a question”and log into Amazon to contact us. We 

will provide you with the best service:

◆You can also send your messages to our customer 

service e-mail:

prunus-technik@hotmail.com

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