In original packaging item, may require some assembly. See link for more details:

Size: 512GB 

Note: Tested, charges, powers on, controllers connect, and works. It's in Russian language so might need a hard reset or troubleshooting, sold as it. 

https://www.bestbuy.com/product/meta-quest-3-512gb--virtual-reality-headset-without-wires-thirty-percent-sharper-resolution-2x-graphical-processing-white/J3LHRV8694/sku/6554912