LivinArts Mini Portable USB Humidifier_ Personal Ultrasonic Cool Mist Humidifier Tankless_ Cute Water Bottle Vaporizer For Travel_ Desk_ Bedroom_ Car. Two Cotton Cores Included _Reindeer_

FEATURES: [Portability] -USB portable mini humidifier and easy to use wherever you need it (dimensions up to 3.30"x1.85"x9.17"). A perfect companion for travel, office, car, and bedroom. Take it anywhere you go, small enough to just put in your purse; [Tankless Design] - Cool mist diffuser comes with no water tank. Two sizes of cotton cores are included and can be easily switched, fits water bottles, mugs, or glasses, takes no effort to add water compare with regular humidifiers, also saves trouble cleaning water tanks. A smart gift for friends and kids; [Durability] - Continuous operation up to 8 hours and will automatically shut off. No need to often replace cotton cores, and cotton cores will be available on Amazon SOON!   INSTRUCTIONS: Please check if both ends of the cotton core are fully absorbent before use. Press the button once to turn on the humidifier, press again to switch to mild mode. Please replace the cotton core regularly. Cotton cores generally have a life span of one to three months, with slight differences in water quality and time of use. This portable mini humidifier is designed to fit most regular water bottle necks with no leaks, however using this humidifier upside down is not recommended.   SPECS: Working voltage: DC 5V Working current: 250mAh-400mAh Spray amount: 30ml-40ml/h Size: 3.30"x1.85"x9.17" Weight: 77g / 126g Material: ABS/PP   What’s in the box: Vaporizing head x 1; Long cotton core with tube x 1; Short cotton core with tube x 1; USB cable x 1.