Bower  Digital Autofocus Power Zoom Flash for Canon EOS 7D, 5D, 60D, 50D, Rebel T3, T3i, T2i, T1i, XS Digital SLR Cameras Dual power saving mode Guide Number: 139 feet (85mm @ ISO 100) Bounce and swivel zoom head allows versatile reflection for difficult lighting conditions Compatible with all Canon EOS models including: 1D/1Ds, 5D, 7D, 50D, 60D, T1i, T2i, T3/3i, XSi, XS, XT/Ti, 300D, 400D, 450D, 1000D 28mm-85mm zoom coverage