One Brand New 150 ws Flash Strobe(master/slave strobe). It could be triggered by a flash, infrared and sync cord (included). It also comes with a test button and variable dial for power setting from 1/8 to full. It also come with a 50 watts modeling lamp. These strobe flash work on any 110v power outlet. It will work as main light, back light or hair light and comes with a easy to use umbrella holder.