The Lily LED dimmable desk lamp features an increased efficiency with a 90,000 hour lamp life and an energy saving mode that will turn it off after 6 hours of continuous use. After the lamp has been turned on you can press the power button a second time to reduce the brightness by 30% then press it a third time to turn it off. You can choose from different color options and it comes with a 15 year structural warranty and a 1 year warranty on the LED/Transformer.