I am selling these items because I purchased them but never used them. This is a set including "Joy-con 2 Handle Set of 2," "Nintendo Switch 2 Dock," "Nintendo Switch 2 AC Adapter," and an "Ultra High-Speed HDMI(R) Cable." If you want to connect your main unit, which is usually connected to the TV in the living room, to a TV in the children's room, you can easily enjoy TV mode by simply swapping the main unit, without the hassle of wiring each time, by setting up a dock in each room.