Tri-Spectrum Technology is our product’s unique ability to change color temperature from a warm, to a brilliant white, to a slightly cooler white at the touch of a button. Some people feel comfortable under the warm light spectrum comparable to conventional light bulbs. Other individuals like the crispness of the brilliant white, which provides the maximum light output on a surface. Often evening hobbies are performed under the cool white setting as eyestrain is reduced. In the end, Stella gives YOU, the user, control.