The Canon Speedlite EL-1 is a high-performance, professional-grade, weather-resistant flash, designed to meet the demands of the most demanding photographers. It features a powerful guide number of 60m (197 ft) at ISO 100, an insanely fast recycle time of 0.1-0.9 seconds, and up to 335 full-power flashes on a single charge. It also has a built-in LED modeling light for precise lighting control and a heavy-duty construction that will withstand the rigors of professional everyday use.