.Powerful USB Humidifier:Moisturizes and refreshes the quality of air we breathe,giving us a healthy indoor environment. COOL MIST HUMIDIFIER: Ideal for Desks, single rooms, baby rooms, travel hotel room. Small enough to take with you wherever you go, even your car. Plugs into any USB power source including portable phone chargers, puts moisture back into dry air from over-heating or cooling. Just fill water with 2-3 drops of aroma perfume for room freshner 400ML VOLUME WATER TANK: Enough big volume can satisfy your demand to continuously work for 10 hours. Every 4-6 hours, the humidifier diffuser will automatically shut off to ensure safety whether there is water inside or not. EASY TO USE: You just fill up the cup with water, after the internal filter is soaked, plug the device into your USB port and press the on/off button. SEVEN-COLORS LED NIGHTLIGHT: Colorful LED Light, Decorate your life! There are 2 modes: 7-color auto changing mode; Stay on one single color mode. You can choose according to your preferences Note - No Battery Included.Just fill water with 1-2 drops of aroma perfume and plug in provided micro USB cable with your mobile charging adapter and start use. 4 - 6hours, water tank water, can be computer powered, mobile power supply, DC power supply. Brand No Brand SKU 101278872_NP-1022026355