The Karl Storz 20133120 Cermax Xenon lamp by Excelitas is the xenon light source of choice for fiber optic illumination applications such as endoscopy and surgical headlamps. This is a 300 watt xenon arc surgical endoscope medical bulb with a parabolic reflector. The PE300BF light bulb has a 1000 hour life expectancy and a warranty period for up to 500 hours.