Amazon Echo B015TJD0Y4 Dot is a hands-free, voice-controlled device with a small built-in speakerit can also connect to your speakers or headphones over Bluetooth or through a 3.5 mm audio cable to deliver stereo sound to the speakers you choose. Dot connects to the Alexa Voice Service to play music, provide information, news, sports scores, weather, and more instantly.
Echo Dot can hear you from across the room, even while music is playing. When you want to use Echo Dot, just say the wake word "Alexa" and Dot responds instantly. If you have more than one Echo or Echo Dot, Alexa responds intelligently from the Echo you're closest to with ESP (Echo Spatial Perception). ESP will be available via a free over-the-air software update, coming soon.