This 4W BC(B22d) bayonet cap clear candle lamp utilises 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. Average life expectancy of 20,000 hours, 2 year warranty, 420 lumens (similar to a 40W incandescent). Non -dimmable.