Stunning Design Amazon Echo Dot 4th Generation Built-in Speakers with Power Adapter, Clock and Alexa. Setup is simple and requires wifi and the Amazon Alexa app. It has a loud and powerful voice. Premium broadcast services Netflix, Disney +, YouTube, Spotify and Apple TV + provide Bluetooth connectivity, Wi-Fi Wi-Fi compatibility Wireless A, Wireless AC, Wireless B, Wireless G. product height 3.50 in Product show up about 3.94 inches. At the top are four physical buttons for volume up, volume down, Alexa activation, and microphone off.