Each Welch Allyn Pocketscope set comes with a4 reusable polypropylene specula and one tube of Kleenspec disposable specula and 4 AA batteries. The 2.5V Pocketscope Ophthalmoscope uses halogen illumination for true tissue color and consistent, long lasting illumination. It has 6 aperture selections for general and specialist use, and 48 lenses for better resolution. The 2.5V Otoscope also has built in throat illuminator- two in one instrument! Features a halogen illumination and fiber optics for a cool light iwth no reflections or obstructions, plus a rectangular viewing lens for instrumentation under magnification. The 2.5V PocketScope handle has a smooth rheostat to control light intensity and features a handy pocket clip.