Astro A50 Wireless Headset for the Xbox One, the new Series X and PC.
These are the newer generation 4.
These are a fantastic pair of headphones with 7.1 surround sound. Once you connected you get the Dolby Atmos app for free on your Xbox.
Excellent condition all round.
I find gaming a lot more immersive with these on, they're great for online shooters because you can really hear the direction of footsteps and enemy fire.