Add extra light to decks, steps, pathways, and more. Super bright light increases visibility up to 150 feet. Wireless and weatherproof, it's great for indoor or outdoor use. 360-degree adjustable swivel head with sensor mounts anywhere. Wireless light uses 4 D-cell batteries. Batteries last a year under normal usage. Built-in motion sensor automatically turns on when movement is detected within 25 feet. 4 bright LEDs last for 30,000 hours, making this great for paths, steps, porches, sheds or anywhere you need more light.