The Switch Lite is the latest iteration of the Nintendo Switch. Designed for portability, this model forgoes its ability to play on your TV for a cheaper price
With the Lite, you can´t use TV or tabletop mode anymore. Only the handheld mode is available, making it a handheld exclusive console like the 3DS before it.
Because it is exclusively handheld, the Switch Lite doesn´t come with detachable Joy-Con. All the buttons and sticks you need are built-in on the console itself.
This means that there are some games that you can´t play with your stock Lite, as it doesn't have detachable Joy-Con.