Back-flow incense burner creates an illusion of a smokey waterfall. Simply place an incense cone at the top of the waterfall, and with the cone's special properties, the smoke starts to flow in reverse direction, that is from top to bottom, and in-turn creates a beautiful smokey waterfall. With scented smoke flowing in waves beside the Buddha, this makes the perfect housewarming gift for any home! back-flow Buddha Incense burner comes with a box of 10 back-flow incense cones. You can order more back-flow cones. This showpiece has been diligently handcrafted by skilled artisans using various traditional techniques.