The Sideclick Universal remote attaches to the Chromcast remote, giving the user 8 programmable buttons to use across multiple devices. Program Sideclick Remote's 8 buttons to whatever your most-used functions are for an all-in-one remote experience. Sideclick eliminates the need to juggle multiple remotes. Users can program the power button to turn on/off a secondary device such as a sound bar, amp, or DVD player. A & B buttons can be used for Mute or Sleep Timer. You can also change channels and inputs with the Sideclick Remote. Chromecast Remote NOT included.