American Diagnostic Corporation 5211 Standard Otoscope. German 2.5v lamp for bright illumination. Bayonet locking otoscope head. Removable 4X magnifying lens. Rheostatic on/off switch. Autoclavable, polypropylene ear specula in sizes 2.5mm, 3.5mm and 4.5mm (one of each). Veterinary model includes 4mm, 5mm, and 7mm specula sizes. Knurled brass handle with a beautiful satin finish. Ergonomically designed for comfort. Compact instrument measures just under 7 1/2" and weighs approximately 7 oz. Powered by 2 C cell batteries (not included). Comes with zippered leatherette storage pouch that holds the otoscope and included specula. Inspected and packaged in the U.S.A. from foreign components. One year quality performance guarantee.