Christmas Workshop Ultra Bright Remote Control LED Chaser String Lights - Blue & White 200 LED String Lengths Ultra bright LEDs means your bulbs will not need to be replaced, give a brighter light and use a lot less energy than traditional bulbs. Fitted already to the set is 8 modes: Combination, Waves, Sequential, Slow Glow, Chasing/Flashing, Slow Fade, Twinkle/Flash & Steady On. Can be used indoors and outdoors making the LED Flashing Chaser Fairy Lights extremely versatile and can be used on windows, Christmas Trees, bedrooms and more! Indoor & Outdoor Use Comes with Remote Control so the lights can be turned on and off with ease of use, as well as choosing a function or pattern Blue & White LEDs Ultra Bright LED Lights 10cm spacing between LEDs 5m Lead - making it versatile & easy to install 8 Functions 19.9m Length If using these chaser lights for Christmas Trees. A General Rule of thumb is 100 Lights for every 1 1/2 foot of tree.