This blue party light bulb is an energy-efficient LED filament type, standard base A19 shape bulb that's safe for outdoor use, even in wet locations.
More Details >This long-lasting, 4 watt LED, A19 shape, medium base green finish glass filament light bulb is great for parties or just adding color and personality to your lighting. Suitable for totally enclosed fixtures, indoor use and outdoor wet locations. Its energy-efficient design uses only 5 watts of energy but is as bright as a standard 40 watt incandescent. Price is for one bulb; one bulb per pack.