I purchased the Mito Red light device after having done extensive research on the medical efficacy of the health benefits of this medical device. I was concerned about my health recovery from a serious knee operation, but more concerned about slowing down the aging process. The numerous health benefits of this light therapy will be more widely accepted as the industry evolves. Competition should bring down the price as the demand for home applications for health and wellness with red light reach maturity. This Mito Red Light offered the best value and price point. Very satisfied. I live in Massachusetts and I pack the Mito Light in my suitcase every time I fly to Florida. I wouldn’t be without it.