Bought these when I had a Switch, sold the Switch and kept the controllers thinking I'd still use them. 

Clearly, I was wrong.

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$55 each or $95 for both, shipping included. I definitely have the box for one, possibly still have the second too.

These connect with Bluetooth and work with Switch (as a Pro controller), Windows (as an Xbox 360 controller), Android, iOS, Steam Deck and Raspberry Pi