(3) Berkey Colortran Photographer's Hot Lights; Quartz King, Mini Lite: Both Dual 650's have the Colortran accessory holder for mounting barn doors, scrims, etc. The Dual 650 has a unique two position lampholder, permitting choice of wide or medium flood. The Quartz-King lights produce the highest output per ounce, per watt in a compact, portable housing. The Colortran Mini-Lite (650 watts) includes a four door barndoor. All the in-line switches work fine, and all the units have been Tested. Lamp bulbs not included.