Create the ideal ambiance for productive mornings, movie nights, and more with the GE Cync A21 smart LED light bulb. It has an E26/Medium base that fits most standard medium base sockets, making it easy to enhance bedrooms, living rooms, and more. Choose from an endless range of colours, warm whites, or cool whites to instantly change the mood. | GE Cync 100W A21 Smart LED Light Bulb - Colour