Invoke (smart speaker)

Invoke (stylized as INVOKE) was a smart speaker developed by Harman Kardon. It was powered by Microsoft's intelligent personal assistant, Cortana. Voice interaction with Cortana provides features such as setting alarms, facts, searches, weather, news, traffic, flights, and other real-time information. Additionally, the speaker's Cortana integration with one's Microsoft Account enabled calendars, reminders, commutes, to-do lists, and home automation features, among others.

The device supported music streaming from Spotify, iHeartRadio, and TuneIn. and was also the first smart speaker to support voice calls using Skype. The inside of the speaker consists of seven far-field microphones, three woofers, three tweeters, two passive radiators, and a 40-watt amplifier.