For when existing WiFi isn't reliable enough for streaming music. Key Features: - Neutralizes network interference from other wireless devices - Offers complete; 360-degree signals through walls and ceilings - No skips; delays or drops - even in homes with wireless problems - Comparable broadcast strength to expensive enterprise-grade routers What's in the Box: – 1 × Sonos Boost Wireless Network Extender – 1 × Power Cord – 1 × Ethernet Cable – 1 × Sonos QuickStart Guide – 1 × Legal/Warranty Information