Material: ABS+electronic components Water tank capacity: 400ml Size: 90*70*145mm Instructions for use: USB plug-in version: Connect to the power supply, add water to the water tank until the absorbent cotton core inside the product is fully absorbed, flip the cover to turn on the light and spray water, turn off the device when the cover is closed. Newest design without buttons: Unique coke cup shape and buttonless design of the car humidifier, no need to open or close the button to adjust the humidifier just open the cup lid or put the lid on. Cordless Use: The travel humidifier can be used without being plugged in. After fully charged, it can be used for 6-7 hours, making our life more convenient. Auto Shut Off Protection: After 4-5 hours of use, the plant humidifier will automatically shut off to prevent dry burning. After stopping, we can restart it and continue to use it until it loses power. When the whole bottle of water is at the highest water level, the humidifier can spray for 10 hours when charging.