Features of the ADC Complete 2.5v Otoscope Ophthalmoscope Diagnostic Instrument Set: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 finishRheostatic on/off switchComplete in zippered case with fitted foam insert that is scuff and scratch resistant and cleans easilyWeighs 23 1/2 ozInspected and packaged in the U.S.A. from foreign componentsBatteries NOT includedOne year manufacturer warranty.Otoscope:Chrome-plated Otoscope head with removable 4x magnifying lens, and insufflator fittingAuto-clavable, polypropylene ear specula in 2.5mm, 3.5mm, and 4.5mm sizesAdapter to allow use with Welch Allyn or compatible disposable speculaNasal speculum adapter with manual screw opening for instrumentation connects to the otoscope headOphthalmoscope:Ophthalmoscope head with lens wheel featuring 25 corrective lenses from 25 to +40 dioptersBent Arm Illuminator:Chrome-plated bent arm larynx and nasopharynx illuminator for lighting the oral cavity and pharyngeal areaOne 3.0mm and one 4.0mm mirror with integral tongue depressor holder that attaches to the illuminatorOne tongue depressor attachment for the illuminatorOne disposable tongue depressor adapter for the illuminatorADC medical instruments and accessories have been carefully designed to meet the rigorous demands of the most discriminating healthcare professionals throughout the world.ADC products are manufactured from the finest materials with an uncompromising concern for quality.Exhaustive inspection of every item by ADC factory trained quality control staff ensures strict compliance with ADC standards for performance and durability.And the commitment to manufacturing excellence is backed by the industry's most extensive warranties.