This USB-C dongle adds Bluetooth audio to the Nintendo Switch
 

Want another option for using wireless headphones with your Nintendo Switch? Maybe take a look at the Kickstarter for Genki, then. It's a $39 USB-C Bluetooth dongle for Nintendo's hybrid console. You can pair two headsets to it, if you'd like, and ap...

https://www.engadget.com/2018/07/13/...e-kickstarter/