Head Only * Apertures include: micro spot small large fixation slit and red-free filter * Halogen light for true tissue color and consistent long lasting illumination * 6 apertures for all general and specialist use * 28 lenses -25 to +40 diopters for better resolution * Rubber brow rest prevents scratching of eyeglasses * Illuminuated lens dial clearly identifies setting * Replacement lamp WA03000 *