Operation: Press and hold the button to turn on the speaker power, the blue light flashes, enter the pairing mode, the mobile phone Bluetooth function is turned on, find the J09 pairing to success, the blue light is always on
Bluetooth playback function: operate related functions on the mobile phone, the buttons on the speaker have play and pause functions
Interworking phone function: two-way voice call
Volume adjustment: manually adjust the output volume by rotating the helicopter helix (clockwise increase, counterclockwise decrease), you can also adjust the volume directly on the device such as mobile phone