Ordered on march 25, received on april 9. Delivered the courier, but the box was very crumpled, the gift is no longer suitable. But i ordered myself, so it's not scary. To work, you need 2 aaa batteries, not included. The comb works perfectly, electrified hair soothes instantly. There is still a vibration mode, i did not understand why it is needed-the vibration is felt only by the hand, not by the head. Ionization is more than enough, vibration could not be embedded. I recommend both the product and the seller :)