Neewer NW622C FSK 2.4Ghz 7 Channel Wireless E-TTL High Speed Sync Flash Transceiver Trigger and Receiver for Canon 5D Mark II, 5D Mark III, 1Ds Mark III, 1D Mark IV, 1D Mark III, 7D, 60D, 50D, 40D, 450D/Xsi, 500D/T1i, 550D/T2i, 600D/T3i, 650D/T4i, 1000D/XS, 1100D/T3; Canon 5D, 10D, 20D, 30D, 300D, 350D, 1D, 1D Mark II Cameras; Canon 600EX, 580EX, 580EX II, 430EX, 430EX II, 320EX, 270EX, 270EX