Yes, the Nintendo Switch has Bluetooth — here's how to connect a headset or new controller

The Nintendo Switch does have Bluetooth, and you can use it to connect wireless headphones or controllers.

How to sync Nintendo Switch controllers with your system, so that up to eight people can play at once

To sync a Nintendo Switch controller, you'll need to go into the "Change Grip/Order" menu on your console. There, you can add up to eight controllers.
Wired

How the GameCube Controller Works on Nintendo Switch 2—and How You Can Get One

After months of silence, Nintendo has finally confirmed that the Switch 2 is coming soon, launching worldwide on June 5 (even if preorders are delayed for the US). But what accompanied that ...
GameSpot

How To Set Up GameChat On Switch 2

Nintendo has lagged behind with certain social features for some time, but it's looking to make improvements with big changes on the Nintendo Switch 2. The new console has a whole new way for players ...