Energy Efficient: Philips LED Dimmable A19 Frosted Light Bulbs uses 80 percent less energy than 40 Watt Incandescent Bulbs while maintaining the look and feel of a classic light bulb Long Lasting: These Philips LED bulbs last 10x longer than incandescent and halogen bulbs; Each light bulb is expected to deliver a lifetime of up to 15, 000 hours and 10 years of light (based on three hours per day), saving you the cost of frequent bulb replacement SMOOTH DIMMING: Philips dimmable LED bulbs are flicker free, silent, and tested to work with more dimmer switches than any other LED bulb on the market. DIMMABLE WARM GLOW EFFECT: Flicker free, silent dimming that works with more dimmer switches than any other LED on the market; The more you dim, the warmer the light from 2700 to 2200 Kelvin just like traditional incandescent light bulbs COMFORTABLE LIGHT: Our products meet strict test criteria including flicker, strobe, glare and color rendition to ensure they meet EyeComfort requirements. Switch to Philips LED, light that’s designed for the comfort of your eyes.