Question about OnePlus 6

We do not have any protective covers at the moment. As for the headphones, we can suggest these: OnePlus Bullets V2 (In-Ear, White)

There will be another version of the headphones, the "OnePlus Bullets Wireless" that will be released soon, considering the features they will offer (for example the aptx standard to name a few, and especially with the upcoming updates) I would advise to wait a bit and get them earlier than buying the V2.

For the cases, OnePlus provides one directly with the phone and a protective film (already placed on the screen) at least the phone is already protected out of the box!