Amazon Echo Dot 3rd Generation Smart Speaker with Alexa The most popular Echo is now even better. With a new speaker and design, Echo Dot is a voice-controlled smart speaker with Alexa, perfect for any room. Just ask for music, news, information, and more. You can also call almost anyone and control compatible smart home devices with your voice. Use your voice to play a song, artist, or genre through Amazon Music, Apple Music, Spotify, Pandora, and others.