This Unique desk lamp provides three types of light for optimum reading or writing and to help reduce eye strain by providing the correct type of light and its intensity. - Cool White: Generally the preferred light for reading and task lighting. It provides the greatest contrast between black type on white paper - Neutral White: Also preferred for reading and task lighting when less contrast is wanted. - Warm White: Provides a warm ambient light source proving the least amount of contrast. 22.125" L x 2.375" W x 0.75" H. Price includes 1 colour; 1 location imprint.