I have been using the Infratonic since October 2014 for various ailments (i.e. muscle aches, better quality of sleep, relaxation sessions, etc.), and have been very satisfied with the performance of the device. I was finally pain-free and very grateful for the Infratonic which helped me recover quickly and safely. I recommend this device to anyone seeking pain, inflammation, stress, or anxiety relief in a very natural and effective way without dangerous side effects.