I purchased 2 strands of these lights in warm white to use on my 6ft Christmas tree. 2 sets did the trick however I just hung them very sporadically for the look I was going for and I don't think 2 strands would be enough if you were circling the tree and working up. You cannot connect these strings together either but that was not a problem for me. Overall they gave the tree just the magical lighted look I was going for and I am very pleased. I really love these on a tree vs traditional bulky lights. I also liked the fact that the wire was copper in color too for that minimal metallic touch.