Combination of dual frequency red-light. Works for my lower back in conjunction with physical therapy. Appreciate the expansion belt for perfect placement.
My wife and I have both been using the belt for a week now and we've both seen a large reduction in pain so probably reducing inflammation as well. I am using it twice a day on my back and my wife is using it once for her sciatic nerve and hip area. Red and NIR lights are great and we would highly recommend this belt for anyone who is looking to add another healing modality to their routine.