Backflow LED Dragon Egg Incense Burner, Backflow incense flows downward through a backflow burner and creates a mist around the product. This item should be placed on a heat resistant surface. When backflow incense burns, the mist it creates may leave a slight residue on the burner and the surface it is placed on. This residue comes from the natural oils and resins in incense and can be cleaned with a damp cloth. Never leave incense burning unattended. Material: Resin, metal, plastic and incenseFor use with: Flowing incense cones onlyBatteries required: 2 ABatteries included: NoIncense included: Yes - 1 flowing incense cone flow Approximate burn time: 30 minutes per coneSold in random colors ONLY