Colorful Night Light Mode: Seven multi-colored LEDs with two brightness settings create a cool and relaxing atmosphere in your room. Choose between two modes: fixed color or automatic color change. One-Button Control: This portable USB humidifier is easy to operate. A single button controls all functions. Press the power button every 1 second to control the mist output. Press and hold the power button for 3 seconds to activate the nightlight and colored LED function. Quiet Operation: Utilizing ultrasonic technology, the humidifier produces a fine, cool mist with minimal noise (30dB). It operates quietly, making it ideal for use during sleep or work. Safety with Auto Shut-off: The personal humidifier automatically shuts off when the water runs out or after the set operating time (4 or 8 hours). Compact, lightweight, and portable, it is suitable for various environments including bedrooms, offices, cars, yoga rooms, travel, and hotel stays. Helps maintain skin moisture and improve air quality. Perfect Gift: An elegant decorative accessory suitable for men and women, ideal for home or office use. A thoughtful gift choice for friends, family, or loved ones.