This is a great feature of what is one of the most magnificent sounding speakers I own.

PROs:-beautiful design-sounds incredible-more features than Sonos including Airplay & Bluetooth connection.-omni-directional sound is better than the SONOS.-stylish metal pancake volume knob on top

The app for the M5 doesn't do much beyond setup unless you utilize Google Cast (now Chromecast Built In) that evidently will facilitate stereo pairing and some other features