Christmas lights string by JK Home Decoration length 30m, with 1000 lights led. They emit cool white light, which is represented on the Kelvin scale with values from 5000K to 6800K. The tones of cool white are more blue compared to natural light. They have an IP44 protection rating, which indicates that solid objects over one millimeter cannot penetrate, nor can water with high intensity. They allow you to choose between various lighting change programs, depending on your mood. They operate on electricity for uninterrupted operation, ideal for large and stable decorations that require continuous lighting.