User's Manual

Turn on the speaker, It come into the Bluetooth model directly .A er pair the device, it can
play the music, Shor
me Press the “ ” to Play/Pause, press the " "and the " " to Prev
and Next. Lon
me press the" " and " " bu on to turn down and turn up the Volume.
AUX-IN, Using the audio cable into AUX solt, and press the “ ” to switch to Aux in Model .
Lon
me press the" " and " " bu on to turn down and turn up the Volume.
In the AUX IN status, it couldn’t shi
rev and Next by Bluetooth speaker, but can control by
connec
on device.
USB/TF Card
Insert the U flash memory or Micro-T F card into the USB/T F slot., NT-640 will read the M P3
format music automa
cally. Press the “ ” to Play/Pause, shor me press the" " and the
" "to Prev. and Next, Lon
me press the" "and " "bu on to turn down and turn up
the Volume.
Bluetooth
AUX-IN
Charging
Please use the original charging cable to charge,Red LED on when charging.
1. OFF/ON: Power Switch, push switch to ON posi on to turn on, push OFF is turn off
the speaker.
2. Aux: Audio input jack when connect. Enable the sound source connec
on ac ve
devices(PC, digital media player, mobile phones and other audio-visual products).
3. DC-5V: Please use the original charging cable to charge. The red LED is on when
charging, when charging is completed m the red LED will be off.
4. USB slot: Used to read the Mp3 files in FAT32 format with maximum size of 16G B
5. TF slot: Used to read the Mp3 files in FAT32 format with maximum size of 16G B
6. Play/Pause: Under U SB/TF/Bluetooth mode, short press for play and pause;
7. M: Press to change mode during USB/T F, Bluetooth, FM and Aux-in mode.
8. PREV/skip back: Under US B/TF/Blueto
oth/FM/Aux-in mode, short press to move
to previous channel/track. Long press to turn down the volume.
9. NEXT/skip forward: Under USB/T F/Bluetooth/FM/Aux-in mode, short press to
move to next channel/track. Long press to turn up the volume.
10. Onekey photograph.
FM Radio
Press M to switch to Radio Model . Short press and to Prev. and Next, Long
press and button to turn down and turn up the Volume.