Neewer E-TLL Master/Slave Camera Flash for CANON ~Master Wireless Control~High Speed Sync Speedlite EOS 5D Mark III II 2 3 1Ds 6D 7D 60D 50D 40D 30D 300D 100D 350D 400D 450D 500D 550D 600D 650D 700D 1000D 1100D/EOS Digital Rebel, SL1, XT, Xti, Xsi, T1i, T2i, T3i, T4i, T5i, XS, T3 SLR Cameras NW982C-II Powerful Flash with High Guide No.58(ISO 100, 180mm). High-speed sync up to 1/8000th of a second. Ultra-fast 2.9 second full-discharge recycle time. Flash Mode: TTL, M, Multi, FEB, Master, Slave, S1, S2 The wirelss trigger: Wireless induction flash lighting Powered by 4 pcs AA alkaline cell or AA NI-MH battery. Large-size LCD display. The speedlite is equipped with large-size LCD screen, with clear and intuitive view.