Christmas lights string by Fos me length 20m, with 200 lights led. They have green cable and emit warm white light, which is represented on the Kelvin scale with values from 2400K to 3800K. The tones of warm white are more yellow compared to natural light. They allow you to control them remotely via the remote control they have. They operate on electricity for uninterrupted operation, ideal for large and stable decorations that require continuous lighting.