Today only, Sep 20, 2018, Best Buy has the Harman Kardon Invoke Bluetooth Speaker with Cortana in graphite for $49.99 (regularly $149.99) with Free Shipping for a limited time.

The Harman Kardon Invoke features three woofers, three tweeters, two passive radiators, built-in Cortana Voice Assistant, Wi-Fi and Bluetooth, and a frequency response of 60Hz to 20kHz.