[ Easy to carry ]: The mini size of 80*80*115mm and USB-powered make it easy to carry and use. It can be connected with PC, laptop, car charger, power bank or any other USB outlet. [ Ultrasonic Cool Mist Humidifier ]: Ultrasonic atomization technology is adopted to create natural and comfortable moisture, humidifying your living space to prevent drying air. The ultra-quiet operation makes it a good choice for your bedroom, providing a more restful sleeping environment. [ Work Efficiently ]: 280ml volume, 35ml / h spray volume. You can enjoy a continuous and delicate nano-level spray. [ Auto Shut Off ]: The humidifier will auto shut off after using for 4 hours. Please make sure there is enough water before running. [ Cute Design ]: Stylish and cute design make it a perfect ornament at home or on the desktop. The humidifier will help you breathe more smoothly and make your sleep more peaceful. It will add clean and healthy moisture to dry air and providing you with a comfortable and ultra-quiet environment. Meanwhile, it can effectively remove harmful substances such as formaldehyde, carbon monoxide and bacteria to achieve the purpose of improving air. Specification: Capacity: 280ml Spray: 35ml/h Rated voltage: DC5V-0.4A Rated power: 2W Unit size: 80x 80x 115 mm Unit weight: 154g Note: Do not exceed the maximum water level when adding water. Make sure the cotton filter is fully soaked before each use. Please use mineral water or clean tap water. Do not use distilled or purified water, do not add essential oil, it will block the atomizer. Do not use the spray function when there is no water, which may cause the product damaged due to excessive temperature. Instruction for Use: Spout: If there were water droplets on the surface of the atomizer, please dry it with a cotton swab or paper towel. Dont touch the spray film with a hard object or add essential oil. Please keep the surface clean. Upper cover: Pick up the edge of the top cover and pull it up vertically to open it. Please note that there is no water leakage at the mist outlet, interface, and button to avoid damage. Install the cotton stick: Grasp the top cover and the catheter to open/insert it. Remove the absorbent cotton stick and soak it before each use. Do not lose the small spring at the bottom. Power interface: Power on after inserting the power cord, suitable for the USB adapter, computer, mobile power supply. Power/Light button: Press the button to start the work; press it again, the power off. (Default 4-hour auto-off) Press and hold the button for 3 seconds to turn the ambient light on or off. (Default 1-hour auto-off)