SONOS PLAYBAR TV Sound Bar/Wireless Streaming Music Speaker (Certified Refurbished), Works with Alexa Works with Alexa for voice control (Alexa device sold separately). Tested and certified by Sonos to look and work like-new Backed by Sonos 1-year warranty Compliments HD television screens with powerful, realistic sound from nine amplified speakers Uses your Wi-Fi -easy to set-up and expand your system over time Requires just two cords: one power cord, one optical cord (both included).