OttLite 964008 Telescoping Table Lamp in White See fine print and details clearly Superior image and color rendering Product Dimensions: Max Height: 18.00in Min. Height: 10.50in Base Diameter: 6.00in Ball joint allows 360 degree rotation and height adjustment for optimal light positioning. Weighted base adds stability. Includes energy efficient 15 Edison watt bulb - rated to last up to 10,000 hours, bulb type S