Details: PROMASTER SystemPRO Cool Lights are great for digital photography and video. They are designed to use cool 5500K daylight balanced fluorescent lamps. This type of lamp offers an excellent daylight balanced color temperature like flash but are easier to use because they are continuous on so you see what you get in advance. 16? round 4 lamp reflector with 2-stage lamp control Uses 4 compact fluorescent lamps up to 85w (lamps not included) White, flexible diffuser included