holiday is not complete without lights! Get this set of battery-operated, azure blue LED holiday lights to embellish your home perfectly. They would ensure hassle-free decor without the need to search for plug points. Great to decorate holiday houses, displays and for . Product Features: Color: blue bulbs / blue wire Number of bulbs on string: 20 Bulb size: concave wide angle nub (mini bulb) Spacing between each bulb: 4" Lighted string length: 6.25' Total string length: 8' Additional Product Features: LED uses 90% less energy Super bright bulb s Cool to touch, non-glass bulbs 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 the back of the battery pack Some assembly required UL certified and approved for indoor use only Material(s): plastic bulbs/wire Note: can not connect multiple sets together