4W E27 clear candle utilizes LED filament technology and is almost identical in appearance to a classic incandescent light bulb. Producing a warm white (3000K) 360-degree light, cool burning, and long life, this lamp is ultra-efficient and reduces maintenance costs. The average life expectancy of 20,000 hours, a 2-year warranty, and 440 lumens (similar to a 40W incandescent). Non-dimmable.