Cool Mist Humidifier - Mini Humidifier - Portable Humidifier - Travel Humidifier - Personal Humidifier - USB Humidifier (White) WinteTech New Version Cool Mist Humidifier: Ideal for Desks, single rooms, baby rooms, travel hotel room, Planes and kids rooms. Small enough to take with you wherever you go, even your car! Plugs into any USB power source including portable phone chargers, puts moisture back into dry air from over-heating or cooling. Portable Mini Humidifier: comes complete with matching water cup for added stability and keeps water clean from dust and lint.You can also take out and insert the main part into any glass or bottle. 12 hours Auto shut off, compatible with any micro-usb cable, compatible with any water bottle. Improve Air Quality And Prevents Damage From Second Hand Smoke, Stale Air And Allergens: It functions as an ionizer by releasing negative ions into the air which combat harmful positive ions. This provides many health benefits e.g. improves breathing, strengthen the immune system, help to lift your mood and relieve stress. Whisper-Quiet Ultrasonic Operation: Less than 15 db means that this humidifier is one of the most silent ever made.12 hours automatic shut-off with an unlimited water source, also automatic shut-off when no water. Very easy to use: You just fill up the cup with water, after the internal filter was soaked, plug the device into your USB port and press the on/off button.