For follicle stimulation, hair growth, and general scalp health. The pictures are from their website and this one is the 82, which means there are 82 laser lights in it. This one was $1200 Cdn. new, and there are other models that sell for around $2000 Cdn. which have more laser lights. These are quality devices sold and recognized by many of the hair restoration companies, and if memory serves, they are recognized as medical devices by Health Canada. See www.capillus.com for more info. I have used it with good effect but it just sits now. I have everything you see in the picture. It has been sanitized and is ready for a new owner. Open to offers on stated price. Thanks. L