USB powered fairy lights. The USB end design frees you from the hassle of battery replacement. Environmentally friendly and eliminates the need for battery changes. You can light up the firefly lights with a USB adapter, power adapter, laptop, power bank, and other power sources with a USB interface. Bright and warm fairy lights, 2-pack --- 33 feet of copper wire dotted with 100 LEDs emit a warm white light, adding warmth to Christmas, birthdays, parties, family dinners, and weddings. High-quality, bendable copper wire allows you to easily build the desired shape, perfect for DIY crafts.