Pocket Monsters Pokemon Mega Ring Mega Stones - 10 pieces This is the item as shown in the photos. It hasn't been used much, and it's been stored for a while, so I believe the battery is dead. I think it will work if you replace the battery. I haven't been able to confirm the operation because I don't have any batteries at home. Please assume that it will work if you change the battery. This item is now difficult to obtain. Since there are 10 Mega Stones included, you can swap them around and play with them. Please understand that this is a used item, and only purchase if you are okay with that.