Great Value LED 3 Way Lumen Tunable A19 Light Bulb are a great option for their cost and energy efficiency. The bulbs has 3 different brightness levels. allows you to easily switch between brightness levels equivalent to 40W, 60W and 100W depending on the tone you want to set for the room. This bulb emits 500, 1000 or 1500 lumens of Day light at those varying levels of brightness. This bulb uses a maximum of 14 watts of power and an last up to 22.8 years base on 3 hours per day. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver.