For the best True Wireless Stereo performance, we recommend that you place the two speakers no further than 3 meters apart as optimum Bluetooth performance can be impacted by nearby Wi-Fi connections and other 2.4 GHz Radio Frequency (RF) communications. If you experience difficulties with True Wireless Stereo, move the speakers out of the noisy RF environment. Note that if your connected mobile device comes out of Bluetooth range, the two speakers will be disconnected.