Light up your home inside and out with these wide-angle Christmas lights. Create magic with the ambient glow from these luminaries. Wrap them around porches and stair rails stuff them in trees and bushes or deck out just about everything else for the most cheerful house in town. Product Features: Color: blue bulbs / green wire. Number of bulbs on string: 20. Bulb size: concave wide angle (mini bulb). Spacing between each bulb: 4 . Lighted string length: 6.25 . Total string length: 8 . Additional Product Features: Uses 90% less energy. Super bright bulbs guaranteed to light. Cool to touch non-glass bulbs. UL certified and approved for indoor use only. Straight line construction. Non-replaceable bulbs. Requires 3 AA size batteries - not included. Standard batteries last approximately 72 hours before they need to be replaced - bulbs themselves will last tens of thousands of hours. On/off switch located on back of battery pack. Cannot connect multiple sets together. Material(s): plastic bulbs/wire