For signaling, warning or marking when on the trail, hunting, boating or on the road. This all-in-one emergency strobe light has three LEDs and a high output incandescent bulb. Use one LED for low light needs, three LEDs for long term close up work or the incandescent bulb when movement is rapid for a long beam. Flash Rate: 60 times per minute. Lasts approximately 10 hours and is waterproof up to 50 feet. Includes a magnetized bottom and a wrist strap. Powered by 4 AA batteries and includes 3 lenses for appropriate color selection/usage.