USB Rechargeable Humidifier: 500ml large capacity, several hours working time. Charging by USB cable through computer, power bank or adapter (Not Include). An ideal way to add moist, refresh air to bedrooms, home, table, office, or carry to anywhere at any time. Less than 30 dB quiet atmosphere can create a quieter sleeping environment. Two modes of night light function, LED warm light mode andamp breathing light mode that can be controlled by long pressing the button. 2 Spray Modes: This humidifier for home contains continuous spray andamp intermittent spray. First single press mist button to turn on the continuous mist mode, second time press to switch to intermittent mode. Do not add the essential oils, perfume, distilled water to avoid blocking. Waterless Auto-Off: The portable mini humidifier for baby will automatically shut off when the water in water tank was below the water level probe. No worry about damaging the device itself or causing danger to users. Made from the finest durable materials that provides long-lasting usability. Perfect Gift: The humidifiers for bedroom humidifies your living space to prevent dry, stuffy air and flu or cold germs infecting your loved ones.. A comfortable gift for your seniors, baby and friends on Christmas, Thanksgiving, Birthday, Valentine's Day or all seasons using. Night Light Function Two modes - warm light (Constant) andamp breathing light are based on your favorite. First long press or Constant light Second long press or Breathing light. A third time for turning off. Waterless Auto-Off When the water level is lower than the water level probe in the water tank, all spray modes are automatically shutted off. Really Anti-dry Protection, Longer Service Life. Cotton Filter Replacement Pull out the cotton swab tube to replace the cotton swab. Please pay attention to the bottom spring when replacing.