Ocular diagnostic device. CLASSIFICATION: according to Royal Decree 414/96: Class I. vacuum lamp 2.7 V, 2.5 V halogen lamp or xenon lamp 3.5V High durability thanks to strong and sturdy metal head. Snap closure for quick and secure attachment to the handle. Focussing wheel with corrective lenses from 0 to +20 and 0 to -20 diopters lenses. Diaphragm great for fundus examinations circle. Easy replacement of the lamp at the bottom of the instrument head.