These string light sets are a 10m string with 100 LEDs, spaced 10cm apart. A controller at the start allows for a range of dynamic effects, and it is supplied with a 0.45m long power lead and 3-pin plug. Its quality construction with transparent PVC wire and bright clear LEDs means they are low profile visually when wound around your tree or set in other areas, while having a great impact light-wise. This is a quality product for a great value price. Even when unplugged or turned off at the wall, the controller will remember the last setting it was set to. The LED string & controller is rated IP65 for outdoor use in protected areas. THE CONTROLLER HAS 8 FUNCTIONS: Combination Steady On In Waves Sequential Chasing/Flash Slow-Go Step On Slow Fade These lights are great decorations for at functions such as weddings, birthdays, Christmas and New Year’s Eve parties.