The limited warranty for this product applies only if purchased from Amazon OR if the product is packaged with a Google Seal for Online Marketplace. Google Nest Wifi is the easy to set up whole-home mesh Wi-Fi system. Nest Wifi routers work together to blanket your whole home in fast, reliable Wi-Fi and eliminate buffering in every room, on every device – with coverage up to 4400 square feet.[1] This is Wi-Fi the way it should be.[1] Home size, materials, and layout can affect how Wi-Fi signal travels. Larger homes or homes with thicker walls or long, narrow layouts may need extra Nest Wifi devices for full coverage.[2] This is based on only using connected devices at a maximum data rate of 1Mbps. Requires sufficient broadband internet connection and connected devices must be located within Wi-Fi coverage area described at g.co/nestwifi/coverage.[3] Strength and speed of signal will depend on your internet provider.[4] Minimum OS requirements are available at g.co/nestwifi/req.