For the use of the incident and transmitted light stereo microscope with articulated arm, we recommend the flicker-free LED incident ring light with continuously adjustable brightness (0 - 15,000 Lux at a working distance of 80 mm). There is no color change with brightness adjustment, and the lamp does not heat up. Output voltage is 18 V/3.6 W. It is mountable for objectives with an outer diameter of 34 to 50 mm.