This ST19 LED light bulb consumes 5 watts of power to generate a light output of 425 lumens, which is equal to the light output of a 40 watt incandescent bulb. The result is a great energy-efficient and power-saving choice for your lamps and fixtures. The clear glass shows the inside Edison filament, which lights up to create a decorative look that resembles an incandescent light. One bulb per pack; price is for one bulb.