2.Previous Song
Under USB/TF card mode - previous song.
Under BT connection mode- previous song.
3.Mode
Press shortly to skip to Wireless BT/LINE IN/USB/TF mode.
4.Record function
Under USB/TF card mode,press "REC" button to record
5.Echo-
6.BASS+/-
7.EQ function
8.Microphone Volume+/-
9.Stand by
10.Pause&Play
11.Next song
Under USB/TF card mode - next song.
Under BT connection mode- next song.
12.Light mode
13.Repeat funtion
14.Record play
15.Record delete
16.Echo+
17.Microphone priority
18.Treble+/-
19.Main Volume
20.Number buttons
Under USB/TF mode to choose songs