When you open up your brand new Switch you'll find the following:
The base Nintendo Switch console (essentially a small touchscreen tablet with railings either end)
A pair of detachable Joy-Con controller of the colour indicated on the box
A plastic grip for the Joy-Con which you can plug the controllers into to create a more standard game pad
A cradle-style dock that connects to your TV
An HDMI cable for connecting the dock to the TV
A power supply which can be plugged into the dock or the console itself