The VistOR SP Model features camera-grade iris diaphragms for precise adjustment of the spot size and intensity control. To accommodate all the areas of use, this light can be configured to be Ceiling-, Wall- and Track-Mounted as well as being available as a Freestanding Mobile Unit. Features of the VistOR SP Spot Light: Continuously adjustable spot size from 3-inches to 16-inches Light Intensity of 21,500 Lux with a color temperature of 3,500°K Smooth, easy-to-position, drift-free articulating arms Removable, sterilizable handle that will also accept most brands of disposable gloves Long lasting quartz halogen bulb