set of 4 bulbs. One bulb was used for a few months the other 3 bulbs have not been used. LIFX - Mini 800-Lumen, 9W Dimmable A19 LED Light Bulb, 60W Equivalent (4-Pack) - Multicolor Light your space with this 4-pack of LIFX smart bulbs. It delivers up to 800 lumens using only 9W, and you can adjust the brightness from your mobile device with the free app. This pack of LIFX smart bulbs displays up to 16 million colors and lasts up to 22.8 years when used three hours per day.