Top-Fill Humidifier: This small humidifier allows easy water refilling by simply removing the top. It transforms water into fine, even cool mist, making it ideal for bedrooms, cars, and on-the-go use. Notice: Do not use essential oils, perfumes, or other chemical liquids, as they can clog the cotton wick and hinder proper operation. Before turning on the device, ensure that the cotton core has been soaked for 5-10 minutes. Verify that the filter core is completely saturated before use. Ultra-Low Noise, No Disturbance When Sleeping: Operates at just 30 dB to create a tranquil atmosphere, supporting quiet environments for sleep or work. USB Powered and Portable: This humidifier can be used wirelessly when fully charged or connected to a power source via USB. It comes with a 360° rotating stand, making it compatible with various devices and usable independently. The battery range is 2 to 8 hours, suitable for use in different places for short periods. Wherever you are, it meets your spatial needs. The materials used are from Bisphenol A (BPA), and the insulated surface enhances handling. One-Touch Settings and Three Spray Modes: One-touch control makes operation simple. Press the power button for one second to adjust the mist output mode. Choose between 2-hour and 8-hour timers. Additionally, a double press of the power button activates a warm night light.