Logitech Harmony 555 advanced universal remote simplifies your home entertainment, replacing up to 15 remotes with one. One-touch, activity -based control turns on the right devices in the right order. Works with - TV/Text, VCR, Satellite, Sky, Sky Plus, Cable, Freeview, Home Cinema, DVD player/recorder, HiFi. Learning function. Requires 4 x AAA batteries (supplied). Manufacturer's 2 year guarantee.