✔ INNOVATIVE DUAL MODE: This Circadian LED light bulbs offers the ability to control and personalize the spectrum of the lighting to deliver optimal daytime productivity and natural speep enhancement in one light ✔ EASY TO USE: Easily change light modes by turning the bulb on/off using a standard wall light switch; transition the light accoring to the natural progression of the sun to support your body's natural circadian rhythm ✔ ENERGY SAVING - Feit Electric LED A19 Light bulb provides up to 84% energy saving by replacing 60W with 9.5W; replace your old incandescent bulbs for a brighter and more energy-friendly home. ✔ LONG LASTING LED TECHNOLOGY: Lasting 10 times longer than incandescent and halogen bulbs with a lifespan of up to 10 years, eliminating the need to constantly change your light bulbs ✔ INSTANT ON TO FULL BRIGHTNESS: No warm-up time for these bulbs; they will light up instantly with its full brightness of 800 Lumens with stable soft white color ✔ QUALITY and SAFETY: UL listed and FCC compliant, Feit Electric upholds the highest standards for all our light bulbs, fixtures and string lights with optimal performance and safety; with 40+ years of experience in lighting, we are the leader in lighting innovations