Logitech Harmony 650 Infrared All in One Remote Control, Universal Remote Logitech, Programmable Remote (Silver) Support for 8 devices is enabled at software setup - replaces up to 8 remotes, reducing complexity and clutter in your living room. AA batteries required (best with Polaroid AA batteries) Bright color screen shows your channel favorite icons plus commands for easy navigation One-touch Activity buttons like "Watch a DVD" automatically switch the right devices to the right settings Compatible with 225,000+ devices from 5000+ brands, including devices you own today and add tomorrow System Requirements: Windows XP, Windows Vista, Windows 7 or Windows 8,Mac OS X 10.6 or later