Importabt NoteDo not use essential oils,perfume and distilled water. If the humidifier can not spray, please take the cotton out and soak it. 2 Mist ModeThis mini USB humidifier has two modes. First mode, you need to press once and it will continuously spray for 4.5 hours. Second mode, you need to press again and it will intervally spray (stop 3 seconds) for 9 hours. Quiet & 7 Soothing LED LightSmall cool mist humidifier is super quiet with low noise, soft night light making it perfect for sleeping. Press the button for 1.5 seconds, the light will automatically change. Press again for 1.5 seconds, the light will turn solid. Safe Protection and Auto-offThis desk portable humidifier holds 200ml of water and can last about 4-9 hours. A water level window helps you check the water capacity. Once the water runs out, it will be auto shut-off to protect the device. Specification: ColorBlue Operating Voltage : DC5V Working current : 500MA Use power : 2.5W Bottle capacity : 200ML Spray volume : 30ml/h Product Size : 72*72*133.5mm Material : ABS + PP+ Silicone Product Weight : 150g Feature: Exquisite small, do not take up space, used in the car, enjoy the fog of water vapor . Deep moisture, meticulous. Micro-molecules easily penetrate the skin surface, direct to base layer, keep the cells full of water. Design with colorful soft night light, help you have a good sleep. Auto shut off function keep safety for using. 4.5Hrs after one press and 9Hrs(stop 3s) after two press. Can be used in lots of places like beauty salon, SPA, Yoga, bedroom, living room, conference room, office, reception center, corridor, pet room, toilet, baby room, hotel, hospital or any other privateor public places. Very portable and convenient to carry. Note: 1.Do not add water over MAX line(less water,more mist) 2.We recommended that you clean the diffuser after each use to avoid clogging and other problems. Empty the water and gently wipe the water tank to dry. DO NOT wash the device directly under the water tap. Package included: 1* Humidifier 1* USB Cable 1* Manual