Wi Fi Connectivity :
Dual-band Wi-Fi supports 802.11a/b/g/n/ac (2.4 and 5 GHz) networks. Does not support connecting to ad-hoc (or peer-to-peer) Wi-Fi networks.
Bluetooth Connectivity :
Advanced Audio Distribution Profile (A2DP) support for audio streaming from your mobile device to Echo Dot or from Echo Dot to your Bluetooth speaker. Audio/Video Remote Control Profile (AVRCP) for voice control of connected mobile devices. Hands-free voice control is not supported for Mac OS X devices. Bluetooth speakers requiring PIN codes are not supported.
Display :
LED Display
System Requirements :
Echo Dot comes ready to connect to your Wi-Fi. The Alexa app is compatible with Fire OS, Android, and iOS devices and also accessible via your web browser.