Bad battery and ineffective.
The item takes a few hours to charge, and once it's charged, it takes a solid half hour to heat up.  Then the battery dies after just a few minutes, before I can even finish using it on my hair.  Additionally, it makes my hair a little bit straighter, not much, and leaves it frizzy, even when I use the hot iron spray that's recommended with this product.  I have medium-textured wavy hair. I am very disappointed in this item.
Rating: 1 stars