About this item 【780ML Capacity】Last up to 9-18hours. Meeting the daily water demand,changing the water once a day can maintain health. The ultra-fine mist will not wet the table, open water tank top filling design makes it easier to fill and clean 【Safe & Auto Shut-Off】The humidifier has 2 built-in water level probe,the LED light will blink reminder and auto turn off the spray to eliminate safety hazards when the water is lower than the safe level. 【Wireless Modes】It can be used wirelessly or with USB charged.2000m - Ah large capacity battery design can last for 4-8 hours with a single full charge. - When the battery is full, the LED light will stop displaying. 【Quiet and Portable】Ultrasonic humidifiers run at low than 20-30d - B Whisper quiet,with the soothing night light help you and kids fall asleep. - A portable space-saving design makes it suitable for your room home,keeps your skin hydrated and breathing comfortably. 【Kind Reminder】1Only use tap water best. Do not use essential oils, perfume, distilled water, pure water, and hot water which may cause the cotton swab to clog and the humidifier to be unusable or cause water to accumulate in the mist outlet of the humidifier. 2 Please wait 5-10min to make sure the cotton core has soaked before the first use, prevent to damage the atomizer.3Do not use upside down NOTE: If the humidifier does not work well Make sure the water source is tap water or mineral water. Don’t use perfume or add essential oils, they will block the atomization sheet, resulting in no mist or just a small mist. The entire cotton swab must be completely wetted before use, If the sprayed water is small, please check whether the cotton swab is in good contact with the atomizer and the iternal spring. When the cotton wick absorbs too many impurities, the spray volume of the humidifier will be significantly reduced or stop spraying. In this case, please replace the cotton wick in time. You can use a cotton swab dipped in a little vinegar to gently wipe the atomization sheet.