The LED Super Beacon increases visibility with 20 ultra-bright LEDs that simulate the rotating look of a police beacon. The Super Beacon is also equipped with strong magnets that make it easy to attach to vehicles, manufacturing equipment, shop walls, etc. Powered by 4 AA batteries (not included) or can be run on our Universal Power Adapter (not included), see links below. The Super Beacon is rated by the manufacturer for 144 hours on a single set of batteries. In our tests, the beacon operated continuously for 4 weeks, 24/7 on one set of batteries. The Super Beacon can be used to warn others of hazardous conditions, increase vehicle visibility or bring attention to any important area or function. The beacons are also a great addition to any party, special event or retail store display. Beacon is visible up to 2,600 feet (800 meters) at night.