Amazon Echo 4th Gen is a smart speaker which has a built-in Amazon Alexa voice assistant. The model has a built-in Wi-Fi module and a network connection is used for power. The speaker also has a mini-jack 3 connector. 5 mm for audio output via cable connection. The device uses two tweeters with a diameter of 0. 8'', as well as a subwoofer with a diameter of 3'', which guarantees high sound quality.