The LiquidLEDs 4-watt Tubular Dimmable LED Light Bulb in warm white 2700 Kelvin (E27/Edison Screw Base Configuration) features LED filament technology inspired by incandescent bulbs. It has a CRI of 90+, clear finish, and smooth dimming compatible with Trailing-Edge and Phase dimmers from 0-100%. It generates 350 lumens for just 4 watts of electricity.