This purchase includes a beautiful Marble Mist Sparoom Art Glass Ultrasonic Mister and a 3-pack of essential oils. The Mister diffuses intermittently for up to 10 hours. Simple: no chemicals, no heat. Use as a mister alone or add essential oils directly to the water for a soothing fragrant spa environment. Produces consistent, healthy humidification. Solid color or changing lights create beautiful hues that add to the ambiance.