The ADC 5215 is a full featured 2.5v set with 5 different instruments in a fitted case. The complete set features a bayonet locking mounts for each instrument head to allow secure connection to the battery handle. "C" cell powered, satin finish chrome-plated battery handle with knurled finish. Rheostatic on/off switch. Complete in zippered case with fitted foam insert that is scuff and scratch resistant and cleans easily. Weighs 23 1/2 oz. Inspected and packaged in the U.S.A. from foreign components. Batteries NOT included. Chrome-plated Otoscope head with removable 4x magnifying lens and insufflator fitting. Auto-clavable. Polypropylene ear specula in 2.5mm, 3.5mm, and 4.5mm sizes. Adapter to allow use with Welch Allyn or compatible disposable specula. Nasal speculum adapter with manual screw opening for instrumentation connects to the otoscope head Ophthalmoscope. Ophthalmoscope head with lens wheel featuring 25 corrective lenses from -25 to +40 diopters Bent Arm Illuminator. Chrome-plated bent arm larynx and nasopharynx illuminator for lighting the oral cavity and pharyngeal area. One 3.0mm and one 4.0mm mirror with integral tongue depressor holder that attaches to the illuminator. One tongue depressor attachment for the illuminator. One disposable tongue depressor adapter for the illumina.