POWERFUL RED LIGHT THERAPY ?S Near infrared light therapy penetrates the skin surface and is absorbed by the mitochondria in the cells, which improves the activity of mitochondria and releases more ATP, peroxidase, protein, and other nutrients, infrared light can penetrate deep into the tissues and bones, producing a thermal effect that increases blood circulation, relieves pain and relaxes muscles. Red light therapy device is the most powerful. EASY-TO-USE ?S LED red light therapy with one-button operation and an automatic timer, It is recommended that the single-use time for the same area is 3-5 minutes, and the infrared therapy use time can be relatively extended with the lengthening over the use distance. We instruct you to point the light 1-2 inches away from the skin. At this distance, you can receive approximately 500mW per cm2. Since the device's output is powerful 1-2 minutes is enough for most pain. EXCELLENT MATERIAL: The outer shell of this red light therapy device is made of good-quality stainless steel housing. Sleek, clean that fits comfortably in your hand. which is sturdy and durable, with a service life of 50,000+ hours.Please note: As we are international seller, our delivery time will take about 10 working days. Our logistics provider and delivery method is: New Zealand Post.