E14 4 w led light bulb with light bulb filament look a dimmable transparent warm whitethis brand new led light bulb achieves the second highest energy efficiency rating a and guarantees high energy savings thanks to the highly efficient quotfilamentquot led technology its special design is very reminiscent of the historic light bulb filament and produces an unparalleled light ambiance with sparkling quotdiamond optic effectquot without the large cooling element familiar to many