Neewer VK581 E-TTL Master Slave Speedlite FlashlightHigh-Speed Sync for Canon Rebel T5i T4i T3i T3 T2i T1i SL1, EOS 700D 650D 600D 1100D 550D 500D 100D 300D 350D 400D 5D Mark III 5D Mark II 7D 30D 40D 50D and all Other Canon Models