4W E14 LED bulb with a glass & aluminium exterior. Curved LED Filament for added aesthetics, Environmentally friendly & Perfect for use within the home to replace the halogen eqvuivalent of 40W. Suitable for use within Lamps, Chandeliers, Side Lighting, Wall Lights & any other alternative which requires a E14 Cap. Providing an energy saving of up to 90% as opposed to the halogen fitting with a energy class of A.