Christmas lights string by Woox length 25m, with 200 led lights, with a thickness of 3mm. They are black cable and emit warm white light, which is measured on the Kelvin scale with values from 2400K to 3800K. The tones of warm white are more yellow compared to natural light. They have IP44 protection, which means they cannot be penetrated by solid objects larger than one millimeter and also cannot be penetrated by water with high intensity. They allow you to choose between various lighting programs, depending on your mood, and control them remotely with the included remote control. Additionally, they have a timer to adjust their operating time.. They operate with electricity.