Neewer TTL Flashlight Speedlite with Mini USB Interface for Panasonic Camera GH3 G5 GX1 GF3 G3 GH2 G2 GF2 G1 GF1 G10,Olympus Camera E-5 E-M5 E-P5 E-PL5 E-PM2 E-P3 E-PL3 E-PM1 E-PL2 E-PL1 E-P2 E-P1,Leica Camera Leica X2 Leica D-lux6 Leica M Leica S Leica X Vario Leica V-LUX4 Leica M-E Leica D-lux6 Leica M10 Flash mode: TTL, M, RPT Compatible with i-TTL flash automatically Support front curtain synchronous Memory function