This is an Impact Three Monolight Portrait Boom Kit. The Impact VSD400 is an economical 400 watt/second monolight with 100 watt modeling light and a digital readout coupled with its four-stop power variator. It accepts Bowens monolight reflectors and head accessories.
The VSD400 has cushioned touch-pad function control buttons. Power is adjustable in 1/10 stop increments, from full to 1/8 power (4 stops). Its model light intensity may be controlled coupled to, or independent from the strobe power levels you select.
The third light in this kit is the 100EX -- an economical 100 watt/second monolight with modeling light and power variator. It comes with its own stand and a 24x24" softbox.
This kit also includes an Impact 16 channel radio slave system, which allows the main monolight to fire without wires from your camera, thus firing the other two monolights from their optical slaves.