Echo Dot (2nd Generation) o Amazon

Echo Dot (2nd Generation) is a hands-free, voice-controlled device that uses Alexa to play music, control smart home devices, make calls, send and receive messages, provide information, read the news, set music alarms, read audiobooks from Audible, control Amazon Video on Fire TV, and more

Connects to speakers or headphones through Bluetooth or 3.5 mm stereo cable to play music from Amazon Music, Spotify, Pandora, iHeartRadio, and TuneIn. Play music simultaneously across Echo devices and speakers connected via the cable with multi-room music.

Call or message almost anyone hands-free with your Echo device. Also, instantly connect to other Echo devices in your home using just your voice.

Includes a built-in speaker so it can work on its own as a smart alarm clock in the bedroom, an assistant in the kitchen, or anywhere you might want a voice-controlled computer; Amazon Echo is not required to use Echo Dot

Size	1.3” x 3.3” x 3.3” (32 mm x 84 mm x 84 mm)
Weight	5.7 oz. (163 grams) Actual size and weight may vary by the manufacturing process
Wi-Fi connectivity	Dual-band Wi-Fi supports 802.11 a/b/g/n (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.
Audio	Built-in speaker for voice feedback when not connected to external speakers. 3.5 mm stereo audio output for use with external speakers (audio cable not included).

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. Certain skills and services may require the subscription or other fees.
Warranty and Service	90-day limited warranty and service. Optional 1-year, 2year, and 3 years extended warranty available for U.S. customers sold separately. Use of Echo is subject to the terms found here.
Accessibility Features	The Alexa app and Alexa-enabled products include several features for customers with accessibility needs related to vision, hearing, mobility, and speech. Learn more about Alexa accessibility.
Included in the Box	Echo Dot, power adapter (9W), Micro-USB cable, and Quick Start Guide.