This set of 500 LED string lights is set out on a green cable which helps to blend them well into your Christmas tree. Featuring 3 times as many LEDs per meter as regular lights, they will create a beautiful cluster effect when lighting up your tree. The bulb spacing along the set is 2.5cm. With their multi-action feature and timer setting, the lights can be set between 8 of its lighting functions including a static setting, which will light up automatically for 8 hours and switch off for 18 hours at the same time each day. So you won't need to worry about remembering to turn them off every time!