Larson Electronics White LED 360-Degree Battery Powered Beacon with Magnetic Base Twenty LED lamp assembly that produces a white color Waterproof, shock resistant, compact and portable The product is highly durable Powered by 4 AA batteries with an operation time of 40 hours Magnetically mounted with one strong magnet Twenty LED Lamp Assembly that produces a white color Waterproof, Shock Resistant, Compact and Portable 360 degree strobe operation Powered by 4 AA Batteries with an operation time of 40 hours Magnetically mounted with one strong magnet