Welcome to Gude, we will serve you wholeheartedly! Wish you a happy shopping! Product Feature: 4 Dimmable Brightness: 100%-75%-50%-25% 4 level brightness, you can choose the brightness that makes you feel most comfortable. Timer: The timing function allows the Christmas lights to keep 6 hours continually on and 18 hours off automatically, not only energy saving but also saving electricity bills. 8 Modes & Multiple Choice: Press the button on the transformer to choose from the 8 different li