Welch Allyn® Green Series™ 300 Exam Light Utilising a single white LED, the GS 300 Exam Light provides a whiter, brighter light than halogen and consumes less energy. It features a perfect combination of intense light output and cool operation in a compact design, along with touchless switch to reduce risk of cross-contamination, and multiple mounting operations for floor space maximisation. It has a low cost of ownership due to elimination of bulb replacement and lower energy consumption, and easy assembly.