Secondly, the square dance trolley speaker player above the mode (MODE) to switch to Bluetooth mode, or the screen displays blue letters, on behalf of has been switched to Bluetooth mode. Then use your cell phone to open the Bluetooth search, find the square dance trolley speaker Bluetooth name for pairing, pairing success, the sound inside the sound will be issued a "ding dong" sound, said pairing success, after pairing can be, with a cell phone to play songs, trolley sound will also ring.