Large-capacity transparent water tank The air humidifier is equipped with a 1 liter large-capacity water tank, which can hydrate the air for up to 6-12 hours. water transparent and top filling design allow you to add water easily. Cool Mist Ultrasonic Humidifier The fine mist humidifier can effectively humidify the air, so your fatigue throughout the day will be swept away. COMPACT DESIGN WITH USB POWER Thanks to the USB power supply, you can connect it to any USB port device with a compact design that does not take many places. therefore it can be used for Auto shut-off This air humidifier has an auto shut-off function, which automatically shuts off after 5 hours. Quiet operation The humidifier produces a noise-free frequency and operates quietly, providing you with moisturizing air so you can sleep or work undisturbed. Rated voltage 5(v) Rated power 2.5(w) < p>Actual shipping quantity: 1 black piece