1.OFF/ON: To tum ON/OFF the speaker.
2.DC 5V: Plug the Micro USB cable to the speaker and connect other end USB port to the power source,
[DC 5VI
3.USB slot: Used to read the song files in FAT32 format with maximum size of 32GB
4.IF slot: Used to read the song files in FAT32 format with maximum size of 32GB
5.Play/Pause: Under USB/IF/Bluetooth mode, short press for play and pause;
6.M: To change mode during USB/TF, Bluetooth, FM mode.
7.PREV/OL-: USB/IF/Blue/FM mode: Swipe left to move previous FM channel / track. Swipe left and long press to decrease the volume.
8.NEXT/VOL+: USB/TF/Smart/FM mode; Swipe right to move next FM channel / track.
Swipe right and long press to increase the volume.