Fast, precise, and absolutely reliable – the Canon Speedlite EL-1 (Ver. 2) delivers exactly the performance that professionals need when it matters most. The extremely fast flash recharge time of just about 0.1-0.9 seconds allows for up to 170 full-power flash bursts. Additionally, high-speed continuous shooting is possible at lower power levels. The powerful LP-EL battery ensures an incredibly fast firing speed. With a single charge, you can expect up to 2,380 flash shots. Furthermore, the flash unit offers the same dust and splash protection as our L series lenses. An active cooling system prevents overheating, allowing for much longer flash sequences. The Speedlite EL-1 (Version 2) can be triggered both wirelessly and optically, enabling you to illuminate your subject as needed. With the built-in two-color LED assist light, you can see where and how the Speedlite EL-1 (Version 2) hits your subject. There is also a preview of where the shadows will fall. The manual flash power can be varied between full power and 1/8,192 power. - Fast flash recharge time of 0.1-0.9 seconds - Guide number 58 - Up to 2,380 flash shots - Weather-resistant construction - Active cooling system - 1/1-1/8192 wide range of power levels.