This vintage-style ES E27 4W LED squirrel cage light bulb is a fantastic, state-of-the-art, modern take on a design classic! Edison steampunk bulbs are currently being used in fashionable and trendy cafes, bars, and restaurants around the world, but can often use a large amount of energy and need replacing regularly. But no more! This is a brand new, energy-saving, long-life bulb featuring an authentically detailed filament that replicates that of a traditional radio valve bulb, but uses the latest LED lighting technology.