Whether you want to trigger a shoe flash from across the room, or a gaggle of 4800 watt/second packs from an arena catwalk, Wein has a slave that will do the job. All are solid, tough and reliable, and there's a model available for any type of flash connection. And leave the batteries in the bag; Wein slaves don't need them.PRODUCT FEATURES: Tiny size, weighs less than 1/2 ounce!; Up to 100 foot range (indoors); Solid epoxy won't crack, protects micro-circuitry inside; Standard PC sync connector attaches directly to the flash via PC or cord.