Order # 18202509 Manufacturer????_# 11820 Brand Panoptic??????? Manufacturer Welch Allyn Application Hand-Held Opthalmoscope with Filter Lamp Size 3.5 Volt Power Source Universal WA 3.5 Power Sources Type Panoramic View UNSPSC Code 42182005 Cobalt blue filter with add-on magnifying lens for corneal examinations (surrogate for Woods Light/black light) Focusing Range: -20 to +20 diopters Weight: .48 lbs without eyecup; .50 lbs with eyecup Fast, easy entry into small, undilated pupils 25?????? field of view versus the 5?????? field of view of standard scopes