westcott 241 Photo Basics Strobelite Three Light Kit Type: Three Light Kit Contains: 3 x Strobelites 2 x 43 White Umbrellas 2 x 7.5' Light Stands 1 x Backlight Stand 1 x Floor Positioning Mat 1 x Floor Mat Guide Card 1 x Educational DVD 1 x Carry Case Color Temperature: 5600K (+-100) Specification: Watt Seconds = 150 Guide Number = 39-mtrs/117 ft. Recycle Time = 2 sec. Flash Duration = 1 ~ 3 m/sec. Flash Variability = 1/4 to full User Changeable Flash Tube = yes Changeable Reflector = yes Model Light Variable = Yes Flash Ready Indicator = Charge Ready Light/Audible Beep Built in Slave = Yes Sync Size = 1/8 Housing = high-impact poly carbonate