One-key switch and compact type - in order to easily operate with one key, the car cup is designed to fit most car cup holders, portable in size, and can be used anywhere. anywhere and anytime (the package only includes a USB cable, no adapter) Note: not wireless Sufficient capacity - the car diffuser has a large capacity of 100ml and has two spray modes: 4 hours of continuous spray, 7 replaceable color LED lights; 6-8H intermittent atomization, 7 replaceable color LED lights; Or use it as a night light (press and hold the button to turn on the color night light within 2 seconds) Completely silent and BPA free. Completely silent. It will not produce any annoying noise. It automatically closes when the water is off to ensure safety and longer life Bring moisture and nature to your car - Ultrasonic technology effectively delivers ultra fog -fine, smooth and even, which is the easiest way to keep your car fresh, free of moisture and odor. Fantastic gift - The perfect mini USB humidifier is suitable for all small surfaces, such as car, office, bedroom, etc. The perfect high-tech gift the concept makes everyone fall in love.