From Welch Allyn, this 2.5v PocketScope Otoscope set includes a rechargeable handle, battery and soft case. This Otoscope uses halogen light for true tissue color and consistent, long-lasting illumination. Its fiber optics provide cool light with no reflection, no obstruction. The wide angle viewing lens allows instrumentation under magnification. It has a sealed system for pneumatic otoscopy. Detach the head to use the built-in throat illumination/penlight for added versatility. The 22820 comes with a AA-Battery powered handle and two AA batteries.