This elegant 4W LED ST64 light bulb from Ledvance offers all the benefits of LED technology with the vintage style of the classic LED ST64 Edison shape.Its LED 'filaments' are housed in a clear glass envelope to recreate the look of traditional incandescent light bulbs. It looks great either hung as a shadeless pendant, or used in a vintage floor or table lamp.While it might look like an incandescent light bulb, its performance is far more efficient. The 4W squirrel cage light bulb emits 470 lumens of warm white 2700K light, perfect for general lighting in homes and commercial spaces. Its long 15,000 hour life means that once the light bulb is installed, it will be years before it needs replacing again. The ES-E27 Edison screw (27mm) cap retrofits to existing light fixtures, making installation quick and easy.