The bowens streamlite 530 head contains five independently controlled spiral lamps making large creative lighting set ups a breeze featuring the same cool running long life lamps as the smaller streamlite 330 two additional bulbs mean a total output equivalent up to 550w of tungsten lightingthe unit has five switches on the back so that the lamps can be switched on or off in any configuration requiredthe detachable reflector with its brilliant white surface comes supplied with an elastic