I do wish I could fond the light accessory kit to add on to it the directions say they made. Function:These are great feeling headphones. This product is amazing, my husband absolutely loved it the only thing the box was a little crushed and I would have liked better protection for my item. I asked him if he likes his NEW H11 Pro Headset, to which he responds ?I like them. I really like this shelf. And not the usual "POWER OFF, DISCONNECTED" message you get when you shut them down properly, they just cut out immediately. Hope you can visualize that. I also recommend it to my friends. Have recommended it to everyone! And I had it fitted with the largest bud (for a tighter fit and great sound isolation).