COOPIC Create Cool Pictures CF850EX C Speedlite Speedlite Features: 1.E-TTL/i-TTL Flash Mode 2.Manual Flash 3.Multi Flash 4.Wireless slave unit.Compatible with Canon wireless flash systems,recognizes TTL from camera system. 5.Slave S1 and S2 Mode 6.Flash control via camera[ only on newer Canon cameras]. 7.Rear-Curtain Sync 8.Audio prompts 9.Power save function 10.Overheating protection 11.Large 2.1” LCD Screen 1 2.Manual and antomatic zoom 13.Full output recycling time of 2.9 seconds 14.Support for high speed continuous shooting.When shooting with 1/16th power and below, it can support up to 12FPS Specifications: MODEL: CF580EX C Circuit Design: Insulated Gate Bipolar Transisitor[IGBT] Guide Modes: TTL,Manual,FEB,Slave, C/N,S1,S2,Multi Wireless Trugger:Wireless induction flash head Tilt Angle:-7 to 90 degrees Rotation Angle:0-180 degrees left and right Slave Channel and Groups:4 Communication Channel[1,2,3,4] 3 groups [A,B,C] Color Temperature:5500k Flash duration:1/200~1/20000 second Flash control:1/128~1/1 stop Length is 0.3EV,Total of 22 fine tune options Peripheral interface:Hot shoes,PC port,External power saving mode, Overheating protection Package Size: 9x8x21cm Package Weight:630g 100% Compatible with Canon cameras Package includes: COOPIC Speedlite----1pc Mini Flash Stand----1pc Carrying Case----1pc Instruction Manual----1pc