MTI’s most economic exam light uses 4 LEDs and is equipped with a high-quality 3" light head. The small light head and flexible neck allow easy movement to many efficient and comfortable positions. Can be used with either a caster base or floor stand.Physical dimensions: head diameter: 3"; caster base height: 73", floor stand height: 71"; caster base diameter: 23-3/4", floor stand diameter: 15". 2-year limited warranty.