Wireless Radio Multiple Flash SystemTTL, E-TTL II & A-TTL CompatibleGN 197' (60 m) @ ISOa100Exceptionally Dust- and Water-ResistantZoom Flash Head: 20-200mm RangeDot Matrix LCD Panel and Backlit ButtonColor Filter Holder for Gelatin Filters18 Custom FunctionsFull 180-Degree Swivel in Each DirectionAF Assist Beam