How can use these headphones?

The headphones that i bought from amazon was by mistake, it was already too late to cancel. The headphones don't match any of my devices since it is usb-c. Is there an adapter that i can use these headphones with my computer or my iphone?

I don't think there's an adapter for this.

You should check if you can return these to amazon.

Yes, but your best bet is to take them to a dealer and ask for help there. Hunting for them on your own would drive ya crazy.

There's an adapter that is sold in the apple stores. I'm sure places like best buy has them too

It's easy enough to return something on Amazon just opened a return and tell them wrong USB plug and return it it's not that hard you'll end up paying more for the adapter if you can find one then you paid for the headphones