1. wired series: one of them as the main speaker, use a 3.5mm audio cable, one end is plugged into the headphone output port of the main speaker, and the other end is connected to the audio input/aux interface of the secondary speaker, and the secondary speaker is switched to audio input/aux mode after connection
.2. wireless series connection (only models with tws function): turn on both speakers and switch to bluetooth mode; click the "tws" key, the blue light flashes to indicate that it has entered the tws pairing mode, and the two machines will automatically start to connect and pair
