20,000 milliwatts of Light Therapy Power. 810 nm infrared producing 14,000 milliwatts. 660 nm visible red producing 6,000 milliwatts. Note: This is based on a power output of 1,500mW per LED. Power density: 1,500 mW/cm2. Weight: 7.7 ounces (218g). Size: 7″ x 3¾” x 1. (177.8mm x 95.25mm x 25.4mm).