By default, Alexa will automatically launch when you start your PC. It must launch and run in the background to listen for the “Alexa” wake word.
Say “Alexa” out loud and start speaking to use Alexa on your PC.
To disable hands-free mode and save some battery power, open the Alexa app and click or tap the “Hands-free” button to the right of the blue Alexa button. You can still open the Alexa app and click the Alexa button to start speaking with Alexa.
Alexa will also stop listening when you close the application. Reopen Alexa to use it once again.