An advanced, high-performing flash, engineered for fast frame-rate shooting, adapted to a range of light conditions and suitable for demanding events such as weddings and corporate functions. An improved flash-control algorithm helps prevent overheating, so you can use the flash for longer, and the Quick Flash feature allows the Speedlite 600EX II-RT to fire even without reaching full charge, so you never miss that unique moment. The zoom flash head covers a range of 20-200 mm, with a maximum guide number of 60 m at ISO 100 to suit most environments, and there\'s wireless flash shooting support available for both radio and optical transmission, whilst a multiple flash system lets you control of up to 5 groups of flashes at one time. Used off-camera or in the hot shoe, the Speedlite 600EX II-RTs versatility allows you to take complete control over your lighting. Benefits Intuitive controls and an information display make your flash simple and easy to use Enjoy powerful performance with guide number 60 m at ISO 100 Get creative with off-camera lighting from any direction using radio wireless control Make the most of reliable performance on and off-camera The Speedlite 600EX II-RT is weatherproofed to the same level as the EOS-1D X Mark II, so you can keep shooting even when conditions get tough Add the CP-E4N battery pack (not included) for even longer bursts What\'s in the box Speedlite 600EX II-RT Flash Soft case Mini stand Colour Filter SCF-E3OR2 Colour Filter SCF-E3OR1 Bounce Adapter SBA-E3 User Manual Warranty Card Compatibility EOS-1D X Mark II EOS 5DS EOS 5D Mark IV EOS R EOS 6D** EOS 6D Mark II EOS 7D II EOS 80D EOS 77D EOS 800D** EOS 750D** EOS 700D** EOS 200D EOS 2000D** EOS 4000D** EOS M5** EOS M6** EOS M50** EOS-1D X EOS-1Ds Mark III** EOS-1Ds Mark II** EOS-1Ds EOS-1D Mark IV** EOS-1D Mark III** EOS M10** EOS-1D EOS-1D Mark II** EOS 5D Mark III EOS 5D Mark II** EOS 5D** EOS 7D** EOS 70D EOS 60Da** EOS 60D** EOS 50D** EOS 40D** EOS 30D** EOS 20D** EOS 10D** EOS D60** EOS D30** EOS 650D EOS 600D** EOS 550D EOS 500D** EOS 450D** EOS 400D** EOS 350D** EOS 300D** EOS 100D** EOS 1200D** EOS 1100D** EOS M** EOS M3** EOS 5DS R EOS 760D** EOS 1300D** EOS-1D C EOS-1D Mark N EOS M2** EOS RP EOS 90D EOS M6 Mark II EOS Ra EOS-1D X Mark III EOS 850D EOS R5 EOS R6 EOS M50 Mark II EOS R3