Small Mini Cactus Usb Car Humidifier $ 12.75 Product information Water tank capacity: 1 liter or less Number of fog outlets: 1 Timing function: more than 8 hours Power supply mode: USB Rated voltage: DC5V (V) Rated power: 1.5 (W) Color: green version with built-in battery, blue version with built-in battery, pink version with built-in battery Product specifications: 79140147mm