Low Energy Consumption & Long Lifespan: The brightness of this antique Edison E27 bulb is equivalent to a 40W tungsten bulb, saving up to 90% energy (energy efficiency class A++). The average lifespan of our old LED bulbs is around 25,000 hours, thus avoiding frequent replacements. Warm and pleasant light: HISAYSY E27 Edison bulbs do not require any warm-up time. When lit, the antique Edison bulb puts out a pleasant warm white light, creating a romantic and pleasant atmosphere that is safe for the eyes. High color rendering (CRI> 80) provides vivid and natural colors. High-quality and durable LED lamp: The old-fashioned LED bulb is made of transparent crystal glass, the interior is empty, filled with helium, and the light source is constant and does not flicker. At the same time, our retro bulbs have overload, short circuit and overheat protection functions, which are safe to use and have a longer service life. Very suitable for decorative lighting: E27 retro bulbs are suitable for chandeliers, wall lamps, table lamps, ceiling lamps, floor lamps, living rooms, bedrooms, hotels, cafes, restaurants, etc. You can use this old fashioned light bulb anywhere you want to create a cozy atmosphere and a sense of nostalgia.