This strobe is equipped with 3 LEDs and can last up to 100 hours of illumination for safety during any time of the day. Featuring replaceable coin style batteries, 2 x 3V Lithium 2032, and a burn time of 57 hours steady on and 110 hours of strobe, this strobe light is also weather-resistant - IPX3 - so you can run in any condition. Clips on easily for high-visibility blinking and steady light modes for optimal safety.