Kaavie - -Travor SL-578C Large 2.2'' LCD display ETTL Autofocus Slave Speedlite Flash for Canon DSLR Digital Camera - GN58 @ ISO100, 105mm, support ETTL, M, Multi mode, Fast recyle Max speed approx 1s, C.F m: set the custom function, 2.5mm Pc Port, Control the flashs with a camera picture menu, Metal Hot Shoe Port etc - Top gun fully compared to Canon 580EX II Fit Devices: Canon. Built with self-designed chip to succeed super speed of charging recycle,approx 1s. With high Guide No.: 58(ISO100,105mm), support M and Multi Mode. The slave mode is provided ETTL for SL-582C speedlite to control Canon Speedlite, SL-568 and SL-566 Speedlite, in 4 channels, 3 groups/Ratios (A, B and C) Built with self-designed chip to succeed super speed of charging recycle,approx 1s. With high Guide No.: 58(ISO100,105mm), support M and Multi Mode. The Master mode is provided for SL-568 speedlite to control Canon Speedlite, SL-568 and SL-566 Speedlite, in 4 channels, 3 groups/Ratios (A, B and C). SL-568/SL-566 speedlite under the Slave mode, flash signal can be received from Canon Nikon Speedlite and SL-568 Speedlite. Flash signal from all brand of speedlites can be received by SL-568/566 speedlite under S1 Mode. SL-568/566 speedlite under the S2 mode , Flash signal can be received from Canon Nikon Speedlite working at TTL mode. Ultrasonic motor inside,support manual focus. Ergonomics design with sound prompts. Equiped with 2.5mm pc port, 2.2inch LCD Display, metal hot shoe port and DC plug