Linksys AC1200 Amplify Dual Band High-Power Wi-Fi Range Extender (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Spot Finder Technology to show where to place the range extender using a mobile device for optimum performance and a quick, easy setup Expands wireless coverage area up to 10,000 square feet Speed of up to N300 + AC867 Mbps Cross band Technology maximizes simultaneous use of both bands