Low cost flashing (1 second per flash) or steady LEDS that clip to a 9 volt battery for marking dark places behind stage sets, studios and theatres. They give off a small but very visible light (red, yellow or green) that help performers to find their marks, or to see the edges of platforms or equipment in the dark. Perfect for music videos or any dark entertainment production. Replaces glow tape in a more effective manner. Ideal for marking center line and quarter lines for dance companies. Identifying in the dark stairs, doors, railings booms, light trees, and actors entrance and exit points. Beacons can also be useful reference guides for Lighting Designers while focusing lights on a dark stage. Battery life is 125 hours. Batteries not included.