Specifications

M303 specification
U or TF card
Insert TF card or U disk, turn the power switch to the left to turn on the speaker power, rotate the volume knob to adjust the volume, and automatically
play the audio files in the U disk or TF card after 2 seconds. When playing music, short press play / pause key can pause play or start play; short press
one or the next key to switch to the previous or next song, long press is fast back or fast forward clockwise rotation volume knob volume increase,
Counterclockwise rotation volume knob volume decreases.
Press delete key to delete the song file that is playing. Short press loop key switch play type (single loop play: screen
display ONE; single folder file loop play: screen display FOLD; all files play: screen display FLL. )
In music mode, use the 0-9 key on the machine to quickly select your favorite track to play. For example, select the 55th
song, press two number 5 keys on the machine, and automatically start playing the 55th song after 3 seconds.
LINE sound (external source play)
The external audio player is connected with the audio line in the boot state, and the other end is inserted into the AUX
audio socket of the machine. The display screen of the machine shows AUX, short press play pause mute or cancel mute.
FM reception
In the boot state, the short button switch to the radio state, in different areas for the first time should enter an automatic search, long press
play pause key machine to start automatic search, in the automatic search process can not carry out other operations, Automatic search will automatically
stop and stay on the first valid station.
FM the radio state, press the play button to mute or cancel the mute. Short press up and down to select the previous or next station, long press
up and down key manual up or down search station.
Digital station and digital frequency selection: in the radio state, you can use the 0-9 key on the machine to quickly select the existing radio
station (for example, the frequency band 89.8 is in the second storage position, Press 2 numbers, (3 seconds); A known radio frequency may also be
entered for playback (e.g. a radio frequency of 107.3 MHz,. Radio frequency Then press 1,0,7,3, After 3 seconds, the speaker will automatically play
107.3 MHz
Open, insert TF card or U disk, press recording key, machine display rec start recording, then press recording key to end
recording, recording is please speak at the recording hole, or when inserting microphone at the microphone,
Automatically play the recording after recording.
Insert microphone in boot state, can use microphone to amplify sound. When the music is played and Bluetooth connection is successful, rotate the
reverberation knob clockwise to increase the echo, and counterclockwise to vice versa. This machine has two microphone sockets that
can be used.
On the boot state, the short press mode key enters Bluetooth mode, the screen flashes display BLUE, opens the mobile phone
Bluetooth setting, and searches the local Bluetooth name the SingM300Bt-Spk.
Display current time (24 small system), press display alarm clock time (3 seconds) again; set current time on time key, set clock number first,
press up and down key to adjust value up or down, Press play key to confirm and set minutes, press recording key to return. Long time clock key into
alarm clock setting, the same method as setting the current time.
Select the screen brightness by pressing the cycle key. The brightness has 5 files :100%,75%,50%,25%,0%
this machine uses DC5-1.5A for charging. When charging, the red charge indicator light is always on, full of hidden lights out.