I thought this was a really cool addition by the folks at Phottix . A 500WS studio light that can -also- be powered by a lithium battery. Add to this the fact that the units have Canon and Nikon Odin trigger units built in: All of a sudden, you have a unit that lives outside as well as inside. This is the dream of every photographer. To be able to make great pictures – no matter the location. As we play with this more we will make sure we bring it to you!!