PREMIUM ULTRASONIC HUMIDIFIER: Built with a generous 2-liter capacity, this water tank humidifies and hydrates dry air for up to 50 hours of continuous operation. Its minimalist design and sizable water tank are ideal for large rooms up to 350 sq ft., such as bedrooms, baby nurseries, and offices. INSTANT DRY AIR RELIEF: A powerful mist output with 2 settings creates a higher level of humidity to moisturize dry skin, and help ease congestion, coughing, and other cold symptoms. Breathe easier while you sleep thanks to a 360° mist nozzle that adjusts to direct humidity toward your face, or away from your body and into the room. ALL-NATURAL AROMATHERAPY: The combination of humidification and a diffuser gently scents your space and pleases the senses. Add your favorite 100% pure essential oil (sold separately) to the water tank and base to deodorize the air, reduce unpleasant odors, and promote relaxation. WHISPER QUIET & OPTIONAL MOOD LIGHT: This clever 3-in-1 product operates quietly wherever it's placed, so you can work, sleep or relax without any background noises. Even better, you can rotate between multiple rainbow-spectrum colors or fix on just one color.