This is a Standard Head without the modeling light feature and it has a household style sync socket on the back with the test fire button. There is a two possition reflector and a diffuser cover, plus a user replaceable 400ws flashtube. Flashtubes last for tens of thousands of flashes or one face down fall.
The Head has the older style sync connection on the back but it has been upgraded to have the safe low sync voltage in case you connect it straight to a hot-shoe on a camera.
If you eventually wish to use higher power levels than 400ws, then we suggest that you upgrade the flashtube to a higher rated version. The Head can handle up to 2400ws.