This speaker has TWS (True Wireless Sound) functionality. This means that two speakers can pair with each other and function as a 2.0 wireless speaker system. This only works however if the speakers are of the same model!To make this happen you must follow these steps:1: Turn on both speakers2: Press and hold the Play/Pause-button on one of the speakers for about 2 seconds and you will hear a tone.3: Release Play/Pause button. It can take a few more seconds before speakers connect to each other4: Go into the Bluetooth menu on your smartphone and pair the speakers with your phone by selecting the speaker model number (it will only display 1 number which is both combined in to one)Now you can enjoy music coming out of both speakers in harmony and use them as a True Wireless 2.0 System!