This battery operated light includes 3 efficient LED bulbs and an on/off switch. The LED light is bright enough to illuminate lanterns up to 36" in diameter. Our LED lights are a convenient alternative for ambient lighting, and are great for party decorations or when electricity is not available. They work great in our 16" to 30"D paper lanterns for a dramatic effect. Two or more BLED10W lights can be used for a brighter light especially when used in lanterns that are 24" in diameter and larger.