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2. Technical Info.

a. DC 5V power input ,  3.7V optional

b. On-Board 2Watts x 2 Amplifier Optional

c. FM Radio optional

d.With USB/SD/AUX/Record/FM Mode

e.Memory support upto 32GB

f. 16-bit Stereo DAC

g. MPEG-1, MPEG-2, MPEG-2.5 Audio Layer 1,2,3 decoder. Bit rate 8-448Kbps, 8-48KHz,CBR/VBR/ABR

h.Plays Mp3 and record Mp3 file ( Recorded file at 44.1KHz , 128kbps ,Stereo)

I. Integrates an USB 2.0 full speed Host/Device controller and a MP3 Decoder Engine

J.On-Board Mic for recording

k.Can record FM , AUX Audio sources to USB /SD Memory

3.Pannel Keyboard functions

a. REC  :  Record button , short press enter into record state , second press to stop reocrd and save the recorded file into SD or USB Memory.

b. MP3/REC :  Switch to play the MP3 music file or  Recorded MP3 files.

c. VOL- : Volume down

d. VOL+: Volume up

e . PLAY/PAUSE : In USB/SD Mode , short press for play or pause music, In FM Mode short press for Auto-Search Radio channels and save,  In REC Mode ,press for stop recording and save file then play it immediately. In USD/SD Mode , If it is Pause state , long press this button for delect the current Mp3 music file or Recorded file .

f. MODE : USB & SD inserted , MODE button switch from USB→SD→AUX→FM→USB , USB inserted , MODE button switch from USB→AUX→FM→USB , SD inserted , MODE button switch from SD→AUX→FM→SD

g. PREV : In USB/SD Mode , for Previous file ,In FM Mode ,for previous radio channel ..

h. NEXT: In USB/SD Mode , for Next file ,In FM Mode , for next radio channel

4. Remote Buttons function

a. REC  :  Record button , short press enter into record state , second press to stop reocrd and save the recorded file into SD or USB Memory.

b. MODE : USB & SD inserted , MODE button switch from USB→SD→AUX→FM→USB , USB inserted , MODE button switch from USB→AUX→FM→USB , SD inserted , MODE button switch from SD→AUX→FM→SD

c. VOL- : Volume down

d. VOL+: Volume up

e.  PREV : In USB/SD Mode , for Previous file ,In FM Mode ,for previous radio channel .

f.  NEXT: In USB/SD Mode , for Next file ,In FM Mode , for next radio channel

g.  REP : Repeat one file or Loop all files switch

h.  MP3/REC :  Switch to play the MP3 music file or  Recorded MP3 files.

i  MUTE： Mute switch

j  EQ: NORMAL→JAZZ→ROCK→POP→CLASSIC→NORMAL

k. PLAY/PAUSE: In USB/SD Mode , short press for play or pause music, In FM Mode short press for Auto-Search Radio channels and save,  In REC Mode ,press for stop recording and save file then play it immediately. In USD/SD Mode , If it is Pause state , long press this button for delect the current Mp3 music file or Recorded file .

l. 0~9： Select files in USB/SD Mode , for examle press  2 , play file 2 , Press 1 and 2  play file 12