The Acton II Voice with Google supports English, German, French, Danish, Italian, Dutch, Norwegian and Swedish.
Yes, these can be used in a Multi-Group using the Google Home app.
Yes, the Acton II Voice with Google uses the Google Home app.
Yes, the microphone can be muted.
Yes, all updates are released OTA (Over-The-Air) as long as the power of the speaker is left on and the speaker is connected to a Wi-Fi network.
No, the Acton II Voice with Google doesn't have the APTX or AAC codecs.
No, the Acton II Voice with Google needs to be connected to a power supply in order to function.