Dual hot shoe design; Use 1 or 2 flashes Flash sync speeds up to 1/250th second (determined by flash/camera combination) Operates on 2.4 ghz frequency to minimize RF interference 8 operating channels help achieve the most reliable operation and allows for the use of multiple triggers in the same shooting set up Mounts to any standard light stand Built-in umbrella holder Trigger uses hot shoe or PC cord for maximum compatibility