4L Humidifiers for Bedroom Ultrasonic Air Humidifiers Aroma Diffuser with Extra Hose Nozzle Ultra Quiet Auto Shut Off Features: 【Ultrasonic Humidifier & Aroma Diffuser】This humidifiers can rinse the air, release oxygen and filter impurities to moisturize your skin and improve your sleep. Add essential oils into the diffuser to make your room emit a clean and fresh fragrance. 【Large Capacity】4L large-capacity water tank allows for 12 to 30 hours of continuous use without adding water frequently. 【Visible Tank & Power-off conservation】Transparent water tank can see the water level clearly. Humidifier will shut off automatically at low water level to prevent damage to the device. 【Easy to Refill & Clean】The top filling design offer a more convenient way to add water. Wide opening design allows for easy cleaning. 【Ultra Quiet & Adjustable Mist】Super quiet that let you rest assured to sleep soundly. 360°rotary switch for adjusting the amount of mist according to your need. 【Dual Nozzle】360°rotating nozzle ensures even humidity distribution. Extra retractable hose nozzle can offer humidity for greenhouse, plant or animal. Specification: Material: ABS Color: White Capacity: 4L Voltage: 110V(US Plug), 220V(EU Plug),220V(UK Plug),220V(AU Plug) Ultrasonic Frequency: 1.7 Million/s Maximum Output: 280ML/H Working Noise: ≤35dB(A) Power Cord Length: 1.2m Product Size: 19.5*19.5*27cm/ 7.68 * 7.68 * 10.63in Product Weight: 1200g/ 2.65lb Packing List: 1 * Humidifier 1 * Hose Nozzle 2 * Sucker 1 * User Manual