The EliteVue Macro Otoscope is our top of the line, premium otoscope option. The otoscope has 5x magnification and a wheel to adjust focal depth, a specula ejection feature and your choice of battery power. Charging and battery options include, C cell alkaline batteries, a USB plug in charger with Lithium Ion batteries or a desk top charging base for use with Lithium Ion batteries. The C cell size handles are sturdy and robust. The collar on the handle has a +/- to turn the otoscope on, as well as brighten or dim to your liking. The otoscope also comes equipped with an auto shut off feature after 180 seconds to preserve battery and bulb life. The two options for illumination are LED or Xenon.