... Range: 24,35,50,70,85mm 4.Power Supply: 4X AA Batteries TTL Flashgun With LCD Display YN-468:e-TTL Speedlite With LCD ... of flash brightness within the range of +- 3ev,with the precision of 1/3ev ... Specifications:Guide Number” 33Circuit Design: IGBTZoom Range: 24,35,50,70,85mmVertical Rotation ... AA BatteriesLighting Times: 100-1500 times with fresh batteriesColore Temperature: 5600KFlash Control: TTL ...