Pearl Invoke speaker
Harman Kardon Invoke with Cortana by Microsoft is currently not available.
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Overview Tech specs Reviews
 
[1] Cortana available in English only.

[2] Wi-Fi required. Invoke available only in the US.
 
[3] Works with select music services (paid subscriptions may be required).
 
[4] Set up requires the Cortana app for Windows 10 PC or phone, Android or iPhone and a Microsoft Account (requires Android version 4.4 or higher, or iPhone 5 with iOS 9 or higher). Must accept Cortana Terms of Use.
 
[5] Cortana experience may vary by device.
 
[6] Works with select home automation providers.
 
[7] Visit www.microsoft.com/en-us/cortana for all product features and compatible services.