Amazing! [SEP] I had one that took 2 AA batteries and it worked well, but the batteries had to be replaced too often. So when I saw this one with usb charge, I bought it. It was double the price but in the long run it will be worth it,because I don't have to change batteries. It works great and the charge lasts a long time. My lashes stay curled all day.<br />UPDATE: Still good but does not stay charged for long. I have to charge every other day.