Hitachi W50 Owner's Manual page 16

2. Grouping Speakers (Party Mode)
Grouping speakers together enables you to play the same music
through multiple speakers at the same time (Party Mode).
You can use the "Hitachi Wi-Fi Speaker" app to use party mode while in
the Wi-Fi Input. Optionally you can use other music/media apps on your
mobile device to use party mode while in the Bluetooth input.
1. From the "Hitachi Wi-Fi Speaker" app, within the "Select a player"
screen, select "GROUP" and add or remove speakers that you wish to
group together (Party Mode).
Note : When speakers are not grouped together, you can play different
songs on other Hitachi Smart Wi-Fi speakers at the same time. You
will need to select individual speakers separately to chose the song,
channels, play list, etc. that will be played by the speaker.
: Up to 10 Hitachi Smart Wi-Fi speakers can be managed from a single
mobile device.
3. Online music services
This speaker is compatible with several third party music services.
Available music services will be displayed within the app under "Music
Services."
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