This listing is for 6 /12 /18 / 24 strands of copper wire LED fairy lights and new batteries included，ready to use when you get it. Fairy lights were operated by batteries (Included), the batteries can be replaced easily. The batteries can last for 72 hours operating time, easy to hide, newest and small battery box 0.75 X 2 inches, good for DIY decorations Wedding Party, Dinner Table Halloween. Safe to touch: Low power & heat insulated copper wire will not make it overheat during usage, safe for children and pets. Starry string lights open up so many new craft and DIY possibilities. Illuminate your bedroom, party, wedding. create shimmering centerpiece décor. It is insulated with lacquer, lightweight, easy to move and bend, easy installation, energy-saving. Number of Fairy lights: 6/ 12/ 18/ 24 pieces Number of LEDs: 20 LEDs/strand Power-Source: CR2032 batteries (included) Batteries Included : Yes Length: 7.2 Ft Type of Bulb: LED **** YOU MUST REMOVE THE CLEAR PLASTIC PIECE INSIDE THE BATTERY PACK OR YOUR LIGHTS WON"T WORK. JUST POP THE BATTERY PACK OPEN TO FIND IT! *****