Good to know - Get up to 2 hours of extra playing time thanks to the battery built-in to this Meta Quest 3 strap - Placed at the back of your head, the battery improves the balance of your headset- The lightweight and compact design of this strap makes wearing the headset super-comfy- You can easily adjust it with a twist of a dial to get a perfect fit around your head - The flexible brace cradles your head, so you'll stay comfortable during long gaming sessions