2-IN-1 HUMIDIFIER AND ESSENTIAL OIL DIFFUSER: Smart LED lights combined with humidifier atomization to create a realistic flame effect. You can add 3-5 drops of your favorite essential oil during use to relieve fatigue, moisturize skin, reduce stress 7 COLOR FLAME NIGHT LIGHT DIFFUSER: This essential oil diffuser is perfect for ultrasonic aromatherapy, collects 7 kinds of lights and mists to create different realistic flame effects, bringing a romantic and soothing atmosphere at night Ultra Quiet: Improve your sleep quality and soothe your mood, relieve your stress during work, study, yoga or spa. WATERLESS AUTOMATIC SHUT-OFF: The flame diffuser comes with a 130ml water tank, the air diffuser will automatically stop working when it lacks water, which is safe and reliable.