Why You'll Love It Wow, what an otoscope! Engineered to specifications created by a pediatrician and an accomplished emergency room physician, this premium quality medical instrument employs a light emitting diode (LED) as its light source for superior light and an extraordinarily clear view of the ear canal and eardrum. Furthermore, the LED light is impervious to shock and trauma because it contains NO fragile filament like incandescent (halogen) light sources. We tried making this bulb go out and couldn't do it. We even dropped the otoscope from a second story window onto the ground, and it still lit right up, brighter than ever! What's Included 3 Sizes of Reusable Specula: Adult (4mm), Child (3mm), and Infant (2.5mm) Pocket Clip An Instruction Sheet with Pictures 2 AAA BatteriesImported