Outstanding Connectivity Connects to speakers or headphones through Bluetooth or 3.5 mm stereo cable to play music from Amazon Music, Spotify and TuneIn. Play music simultaneously across multiple Echo devices and speakers connected via cable with multi-room music (Available for Amazon Music and TuneIn. Bluetooth not supported). Stay Connected Call or message anyone hands-free who also has an Echo device or the Alexa App. Also, quickly connect to other Echo devices in your home using just your voice. Smart Home Functions Controls lights, switches, TVs, thermostats and more with compatible connected devices from WeMo, Philips Hue, Sony, Hive, Netatmo, Nest, tado° and others. Sound That Works 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 device. Stays Updated Always getting smarter - Alexa updates through the cloud automatically and is continually learning, adding new features and skills. Key Features Colour: Black 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 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). Fully Refurbished product Setting Up Your Echo Dot Tip: Before setup, download or update the Alexa app in your mobile device\'s app store. Plug in your Echo Dot device. On your mobile device, open the Alexa app . Open More and select Add a Device. Select Amazon Echo, and then Echo, Echo Dot, Echo Plus and more. Follow the instructions to set up your device.