These icicle lights will add some razzle-dazzle to your holiday decor. Not only are they decorative but they are battery-operated allowing you to free yourself from the burden of an outlet! Perfect for your home office and restaurant Christmas decor you can decorate a mantelpiece centerpiece or doorway with these fun icicle lights. Bulb size: Mini. Bulb type: Incandescent. Lighted string length: 4.5. Total string length: 5.5. LED lights 90% less energy. Bulbs stay cool to the touch. Non-replaceable bulbs. Convenient on/off switch on the battery pack. Cannot connect multiple sets. A covered outdoor area or indoor use is recommended.