4w LED filament retro GLs light bulb with amber tinted glass. Their retro-inspired filaments replicate those of a traditional radio valve light bulb while using a fraction of the energy. They produce equivalent light output to 40w standard bulbs (440 lumens). These bulbs are manufactured to the highest possible standards and include a one-year guarantee against faulty manufacture. ValueLights ES/E27 4W LED GLS Filament Bulb in Orange