Derma Red Plus P900 is one of the most powerful red light therapy devices on the market. We are extremely happy with the product, overall excellent performance with so many health benefits. Super easy to operate with daily 15-20min sessions, very relaxing experience with slightly warm feeling, great to start the day with red light therapy. After the research, this is latest product, modular so it can be extended with additional panels for even more powerful experience. We decided to start with P900 unit and potentially extend in future. Our initial 30 days experience is very positive, mostly using both modes with near and far infrared lights activated. Highly recommended, very goo product and service delivery. 5 stars !!!!