Basic Operation
Power ON
Press and hold the 
button to turn the power on. An animated logo will appear on the OLED Display, and then you can start to use the T.sonic 520.
The waiting time for Power On is about 3 seconds.
If a “LOCK” message appears on the OLED Display when you attempt to
Power OFF
Press and hold the 
button to turn the power off.
The waiting time for Power OFF is about 3 seconds.
The OLED Display will show the Power OFF status.
Play a Track
Press the 
button to play an MP3/WMA or WAV track.
Pause a Track
Press the 
button to pause the track during playback.
Advance to the Next Track
Push the Menu Switch to the right (Next) 
to skip to the next track.
Return to Previous Track
Push the Menu Switch to the left (Previous) 
to go back to the previous track.
Fast Forward
Push and hold the Menu Switch to the right 
to
Rewind
Push and hold the Menu Switch to the left (Rewind) 
to rewind the track.
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