Battery/Power source: Requires DC 5 volt 0.7A power adapter (included) that plugs into a standard 120-volt wall outlet. Remote control requires two (2) alkaline LR44 replaceable button batteries (included). Connect the Magic Light and Sound Christmas tree topper to the power adapter (included) to see a continuous light effect. Press the button on the remote control (included) to watch the tree topper perform synchronized sound and light shows inspired by a day at Walt Disney World Magic Kingdom.