12 Led Christmas lights warm white in series 1.3 m battery with copper wire

Christmas lights turn Aca length 1.3 m, with 12 led lights, of a thickness of 3mm. They have a copper cable and emit a warm white light, which is attributed to the scale Kelvin with prices starting from 2400Κ to 3800Κ. Tons of warm white is more yellow in relation with the natural light. Have degree of protection IP20, which does not allow direct contact of the fingers with the lighting elements. Work with batteries.