USB rechargeable humidifier: 500ml large capacity, several hours of working time. Use USB cable to charge via computer, power bank or adapter (not included). An ideal way to add moist, fresh air to your bedroom, home, desk, office, or take it with you wherever you go. Product specification 120*120*123mm Function: A quiet atmosphere of less than 30 dB can create a quieter sleeping environment. There are two modes of night light function, LED warm light mode and breathing light mode, which can be controlled by long pressing the button. 2 spray modes: This home humidifier contains continuous spray and intermittent spray. The first single press of the fog key turns on continuous fog mode, and the second press switches to intermittent mode. Do not add essential oils, perfumes, distilled water to avoid clogging. Auto-off without water: When the water in the tank is lower than the water level probe, the portable baby mini humidifier will automatically turn off. Don't worry about damaging the device itself or causing danger to the user. Made from the finest durable materials for lasting usability. PERFECT GIFT: Bedroom humidifier humidifies your living space and prevents dry, muggy air and flu/cold bacteria from infecting your loved ones. Comfortable gift for seniors, babies and friends for Christmas, Thanksgiving, Birthday, Valentine's Day or all seasons.