Illuminating with each shot and staying lit until you reset, the Nockturnal by Rage Universal Fit Lighted Nock adds extra ease to your hunt or target practice. This versatile lighted nock comes compatible for X, H-, S-, and GT-sized bushings, ensuring a seamless fit every time. Easily track and find arrows in dark or low-light conditions with the String-Activated switch that lights up the nock instantly with the increasing inertia of your shot. Even from a distance, the Nockturnal Universal Fit Lighted Nock is easy to spot, so gathering arrows in the dark has never been easier. Durable clear Polycarbonate construction. Battery life: 20+ hours. Weight: 22 grains. Imported.