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 . 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 . 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.