You can connect a smartphone, tablet, computer or other type of audio device from the audio output to the AUX connector of the speaker. The AUX connector accepts a 3.5 mm stereo cable plug (not provided).
Using a 3.5 mm stereo cable, connect your device to the AUX connector on the speaker
On the speaker, press the Power button. The AUX indicator glows
Play music on the audio device. Increase the volume on the connected device to near maximum, then use the speaker volume buttons to adjust the volume level