The Outpatient LED Exam Light outperforms current industry-leading halogen lights by offering a light output of 90,000 lux (8361 fc) at 24" (61cm) for an average of 20,000 hours. 95 CRI (Color Rendering Index). Virtually heat-free. Improved output all while providing a 60% energy savings over current halogen options. A knob can be turned to adjust friction on the self balancing arm to desired position without use of a tool. This light is perfect for most examination applications in the hospital, physician's office, surgery center, and veterinary field. Five Year Warranty.