Echo Dot (2nd Generation) is a hands-free, voice-controlled device that uses Alexa to play music, control smart home devices, make calls, send and receive messages, provide information, read the news, set alarms, read audiobooks from Audible, and more Connects to speakers or headphones through Bluetooth or 3.5 mm stereo cable to play music from Amazon Music, Spotify, Pandora, iHeartRadio, and TuneIn Introducing Alexa calling and messaging, a new way to be together with family and friends. Just ask Alexa to call or message anyone with an Echo, Echo Dot, or the Alexa App.