WelchAllyn 12870 - PUR POCKET LED OPTHALMOSCOPE/PLUM WITH HANDLEPocket sized LED ophthalmoscopes from Welch Allyn with long-life LED batteries, SureColour Technology and strong, robust, drop-resistant casing.the LED Pocket Ophthalmoscope gives 30x longer life from two AA batteries than with standard ophthalmoscopes.SureColour bulb technology allows you to see true tissue colourDioptre range: -20 to +20Apertures: micro-spot, small spot, large spot, slit aperture & fixation apertureFilters: Colbalt blue & red-freeLight Output: 3 lumensBatteries: 2 x AA (not included)With 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.