I ended up ordering 14 strands of theses lights. One strand never worked at all. Not worth returning 1 strand due to shipping costs. Lights work very well otherwise and seem durable. Note from CLS: The customer was contacted and the faulty string was replaced.
The lights were exactly what I was looking for. I will be sure to return to the Christmas Light Source for my future purchases.
Had several neighbors comment on how brilliant the blue lights were. They loved my blue and white theme. The lights are so beautiful on the pine tree in front! Thank you. - J Grimes