GE 17471 45 Watt Outdoor Halogen 1-1/2+ Year Floodlight PAR38 Light Bulb Protect and beautify your home Application: Outdoor fixtures, including motion sensing fixtures and yard stakes Base: medium skirt (E26/50x39); Bulb type: PAR38; Watts: 45 Initial Lumens: 540 1.5 Yr Life based on 4 hours use per day