These mains operated lights are multi-functional and offer 8 different multi-function settings including: Static, Twinkle, Fade, Chasing, Glow, Sequential, Waves, and Combination. This allows you to flick between settings or choose your favourite setting for the Christmas period. Additionally, these lights come with a useful timer function which allows you to set your lights up to come on at the same time every day. The timer will see your lights come on for 8 hours and turn off for 16 hours per day. Not only do these brilliant lights allow for a timer function and 8 multi-functions settings which means that when you switch the lights off at the mains plug they will still remember your timer settings and desired multi-function settings. This means you will not have to reset your lights every time you switch your main plug off. - Shatchi 1500 LEDs Multicolour Compact LEDs Green Cable Christmas Home Decorations