Meking Tungsten lamp Light bulb10 800w 110v 3200K for Redhead Light 10 pieces T-4 Bulb, R7s Base 21,400 Lumens, 3,200K Colour Temperature 800W Modeling Lamp for Studio Flash (110v) For studio, film and television lighting. 110V double ended Quartzline Halogen bulb suitable for Photography light or Redhead lamps. The light blub we selled are continue lighting more than 80 hours of life ( Note: Can not switch off frequently, frequent switching lights will shorten the life of the product, so we recommend not to switch off the lights and should keep the lights open )