WelchAllyn 25284-C 3.5V HALOGEN OTOSCOPE SETWith the right balance of color temperature, color appearance (or CRI) and brightness, we have optimized LEDs for EENT instruments, providing the benefits of LED light without changing the view that you are competent to diagnose. Welch Allyn LED lamps are rated for up to 20,000 hours of use and require no replacement.Fibre optics project cool light to the distal tip with no reflections or obstructions for superior views of the tympanic membraneWide-angle viewing lens allows for instrumentation under magnificationA sealed system for pneumatic otoscopy and accurate diagnosis of otitis mediaRechargeable Lithium Ion handleComes in a protective hard shell case