This is one powerful tool. I had a demo and didn’t notice a thing that day so I decided against the purchase. I was not in pain. One month later I injured a rib and had shooting pains all night long. Knowing this would take weeks of sleepless nights, I opted to give this expensive device another shot. Lo and behold the first treatment got me 50% out of pain and by day three I was back at work doing my normal routine without pain. Since then i have traveled to Yosemite with my Celluma Pro and a car converter. It keeps me out of pain and gives me the ability to spend fun time on vacation with a smile on my face. These types of panels will one day be part of your home and provide almost instant pain relief for the whole family and deal with acne faced kids as well.