【Materials】Made of environmentally friendly ABS materials, safe and durable, can be used for a long time. 【Portable Design】Portable and small design is very easy take with you anywhere and super perfect for travel, bedroom, office, which is effectively moisturize dry skin. 【Large Capacity & Large Spray】 The liquid water is atomized into micron-sized water particles by ultrasonic vibration. The large volume of 2000ml and the fine spray are used to increase the air humidity. 【Whisper Quiet 】 Silence operation below 30dB allows you to sleep easily in a comfortable and quiet environment. 【Two Spray Modes】Two spray modes: continuous spray & Alternate spray. First single press mist button to start the continuous mist mode; Second press mist button to Alternate spray mode.