Razer Thresher headphones to pc - help

Hi all

My current headphones steelseries snapped a while back and I decided to get a new pair for christmas, went for the Razer thresher after seeing some really nice reviews, I am mainly a PC gamer but play xbox occasionally as well so i went for the xbox version of these.

I did not realize that the adapter did not come with the headphones i had purchased and i have no way to connect these to my PC, i thought i could atleast have a wired option if i did no choose to go wireless but seems they are completely wireless.

Im sure i need a bluetooth adapter, do i need the official xbox one windows adapter or will any bluetooth adapter do? i cannot find a store close to me that sells it or has one in stock bar a generic brand.

Or

is there any other way to get these connected im extremely disappointed and thought this should have been included in the box and my first experience after always wanting razer products im fairly annoyed. (there is a small disclaimer that says it is not included but i had to really check the box to see it)

anwyay id be grateful for any help

thanks!