HP3250RL-LR Quad Ring Light attached under the unit microscope heads. The HP3250RL-LR Quad Ring Light is 4-7 watts. The quad ring light has a max opening of 61 mm. Quad ring has 144 LED bulbs with 4 areas that are turned on and off separately. The quad ring light is 30% brighter than similar LED microscope lighting and crafted only for distribution by METRO CAD, Inc. Two color options: 3,250 K or 5,600 K
