Upgraded Red Light Therapy Lamp: Each therapy bulb has 18 high power LEDs in total. 9 660nm Deep Red LEDs + 9 850nm Near Infrared LEDs, making it the ultimate best wavelength for light therapy.Infrared light is invisible to the naked eye so when using this bulb, only half of the chips will appear illuminated Optical lens design: The red bulb is equipped with a 60 degree glass lens and an additional super wide optical lens which improves irradiance > 141mW/cm2. Targeted treatment for your face shoulder knee waist 20 minutes each time Drug Free & Non-Invasive Pain Relief: Designed to deliver infrared heat to the body. Infrared heat improves blood flow & circulation to the target area, encouraging damaged muscles and tissues to heel Easy and Durable to Use: Designed to fit standard E26/E27 socket, 100~240V AC, easy to install and use. Enjoy light therapy at home, whenever you want. The high power LED light therapy bulb has a built-in qualified heat sink for better heat dissipation, durable to use