Universal remote for TVs, VCRs, DVDs, satellite receivers, etc. Capable of replacing up to 4 remotes. Simply connect the remote to your computer and configure Logitech’s web-based setup. Compatible with over 5,000 brands - with the list growing continually. Can also be programmed (learn) from existing remote controls. Comes with USB cable. Batteries: 2 x AA/LR6 (included). Compatible with Windows 7 (32/64-bit), Vista (32/64-bit) and XP. Requires an Internet connection. Size: 22x6x3 cm. To check compatible brands and models go to: www.logitech.com or www.myharmony.com.