Based on Excalibur's famous Vari-Zone crossbow scope, the new Lumi-Zone is a serious low light option made with today's avid crossbow hunter in mind. The Lumi-Zone combines a 40 mm objective lens for maximum light gathering with an illuminated multiplex reticle, making it a must for hunting in the low light conditions, when "the big ones" are active. Like the Vari-Zone, the Lumi-Zone features Excalibur's adjustable multiplex crosshair system that makes it possible to match the exact trajectory of your crossbow at velocities between 250 and 350 fps.