2 IN 1 HUMIDIFIER: This humidifier serves a dual role, as a cool mist maker, and as an aroma humidifier. SILENT RUNNING: The ultrasonic humidifier is as quiet as a ticking clock. With only 36 decibels, it won't disturb you whatsoever, making it ideal for night-time usage. SMART MODE: The humidity levels are adjusted automatically for the best ambient, but there is also the option to adjust them manually. LONG-LASTING: Given the 4L capacity, the humidifier takes only one refill to last for the entire day. EASY REFILL: Since it's a simple top-fill, all you need to do is pour water into the insert at the top of the unit. EASY CLEAN: All you need to do is remove the lid and wipe the lid with a wet cloth. SAFE: The integrated shutdown function will automatically turn off the humidifier when the water tank is empty, being a great humidifier for a nursery. Color: White.