Mini design and quick humidification - the dimension is 3.77 x 13.3 cm, easy to carry. The capacity is up to 330 ml and the spray speed is high up to 35-40 mlL/H, cleans the air quickly. Attractive design - this is the new aromatherapy diffuser ultrasonic humidifier air purifier. With the compact portable design, fine shape and unique style: Specially designed for people who love life. Nanometer atomization and long-term work - Nanometer atomization technology makes water mist turn into micro water molecules and prevents the formation of mold, mildew and bacteria, more healthy for you. Continuous spraying for 4 hours with automatic shutdown safety system that protects it from damage. Silent operation and powered by USB charger - advanced ultrasonic vaporization technology. Suitable for use in baby's bedroom, car, yoga room, office. Can be charged by any USB source such as car charger, power bank, computer, laptop, etc. Easy to use! Attention - the first time you use it or a long time no use, the cotton filter wick is dry, so you need to wet it completely and then put it into the catheter (Note that the metal spring should be on the bottom of the plastic catheter). Otherwise, the sweet moisture cannot fog.