4L Large Tank for Continuous Comfort: Enjoy quiet sleep without congestion, coughing, or dry mouth, Dreo's ultrasonic atomization brings noise down to 28dB, while its 4L tank provides up to 32 hours of moisture without the need to refill. Next-Gen Humidification Performance: Powered by Dreo's Dual-intake and 4-inch mist outlet design, this humidifier creates a supersized mist 3X larger than most humidifiers for bedroom, bringing 3X faster dry air relief to help you breathe easy and healthy. Bring Freshness All-around: Thanks to its high-frequency atomization process, this humidifier for home releases 2X finer and lighter mist particles, allowing humidity to spread evenly across the room without wetting surfaces. Easy Top Fill Design: This portable humidifier allows you to fill up without having to flip the tank or spill water on the floor. Its modular design is easy to remove and install, giving you a hassle-free cleaning experience. 3-in-1 Humidifier: This cool mist humidifier is a perfect companion for a healthier life, from helping you breathe easier, to making your own aromatherapy sessions, to changing the mood of your room with its ambient light (essential oils not included). Customize your mist: choose from three different mist levels and direct the mist you like with its 30° tiltable nozzle. Auto-shut off design allows the humidifier to shut off automatically when the tank is empty, making it the perfect humidifier for nursery and plant care.