Eastern Times Technology S531 Operation Manual page 2

If breakage,distortion,overheating or other abnormal
situations occur,please stop usage and contact us .
Function Overview
Basic Funcions
1、 Long press : POWER : ON/OFF;Short press:
2、 Model key :BT/Aux/radio/ TF card/USB
3、 Long press :Volume-,Short press: The last song/ The last channel,in the radio state
4、 Play/Pause , callback ,Doublue click will search for channels in the radio state
5、 LED
6、 Long press :Volume+,Short press:The next song /The next channel,in the radio state
7、 TF card socket