Satco's LED A21 color-changing, tunable white SMART bulbs offer a traditional look with a medium lamp base that brings intelligent lighting to your everyday living. The lamp replaces a standard bulb and offers dynamic color-changing light choices and adjustable white light that can be warm and relaxing to bright and energizing. Use the STARFISH app from wherever you are to turn your lights on and off and modify your colors: the possibilities are endless. Satco STARFISH has the right light for you, no matter your mood.