MULTICOLOUR, DIMMABLE & BRIGHTNESS: Easily adjust the color, brightness (1% - 100%), and color temperature (1700K-6500K) of each Yeelight smart led bulb through the intuitive YEELIGHT app. With 16 million colors, to meet your various expectations.SMART LIGHT LIFE: Customize schedules to light up your life. Automate your daily rountine with timers and smart schedules. Explore countless other ways to enhance the way you live, work, and play.GROUP & REMOTE CONTROL: Adjust bulbs individually, or group multiple bulbs, lamps, and other fixtures together to synchronize lighting for a whole room, and control them anytime, anywhere. Control them all with just one command.EASY TO INSTALL & ENERGY SAVING: Each color changing light bulb support 2.4GHz Wifi. No hub required. Just screw it in, tap in the app, and use your phone or smart home speaker to create stunning lighting effects. It can last over 25,000 h or 22.8 years lifetime with normal use (3hrs/day).