This is a great item. There is only one downside that I don't want to overlook. This item will overheat if left plugged in. I don't know why, but I'm glad I sat next to him and touched him. The product works great, does its job, but the extremely ridiculous heat issue is dangerous. With more intensive use, the product also gets quite warm, which is to be expected. Recommended if heat problems when not in use are not a problem. Update *** The product emitted sparks, copper wire. And random particles around and I turned it off. Turned it on to see if it works, it's dead. It's been around 10 hours of use. Maybe I got a bad block but definitely a big disappointment.