Function: 1. 1. Upgrade Red Light Therapy Lamp: Each therapy bulb has 9 high power lamp beads. Deep red 660nm LED near infrared LED 850nm, making it the best wavelength for phototherapy. Infrared light is invisible to the naked eye, so when using this bulb only half of the chip will be illuminated. 2. 2. Optical Lens Design: The red bulb is equipped with a 90-degree glass lens and a large optical lens, which can increase irradiance >141mW/c. Designed to care for the face, shoulders, knees and waist for 20 minutes. 3. 3. Non-drug and non-invasive: designed to deliver infrared heat to the human body. Infrared rays can improve blood flow and circulation in the target area, thus promoting the movement of heel muscles and damaged tissues. 4. 4. Easy to Use and Durable: Designed to fit standard E26/E27 sockets, AC 85265V, easy to install and use. Whenever you want to enjoy light therapy at home. 5. 5. The high-power LED phototherapy bulb has a built-in qualified heat sink for better heat dissipation and durability. Specification: Power: 54W Size: 12.5*13.5cm Voltage: 85-265V Lamp holder model: E27 Wavelength: deep red 660nm near infrared 850nm 9 dark red 660nm LEDs - effectively absorb skin and repair skin problems. 9 850nm dark LED lights (looks very dark and normal) - penetrate deep into the skin, which can relieve pain more effectively Package List: physio lamp*1