Amazon Echo Dot 4th Gen Smart Speaker with Alexa is a smart speaker with a compact design. The speaker is best for streaming music. You can stream endless music on this speaker from various music apps like Amazon Music, Apple Music, Spotify, Sirius XM, etc. This speaker can also be used for listening to podcasts. Command Alexa for various tasks like play music, turn off and on lights, answer questions, thermostat adjustment, and alarms. The Alexa instantly listens to all the commands. Its connection type is a 3.5mm jack. You have to connect this device with Wi-Fi and Bluetooth. Its weight is 0.75 pounds.