1、5mm atomization effect does not wet the tabletop and does not damage the computer, easy to use. 2、Easier to use with various brands of water bottles and multiple ways to get electricity, more convenient. 3、Drop 1 or 2 drops of essential oil or special purifying dew into the water tank, making the air more fragrant. 4、Stylish and fashionable appearance, exquisite and compact body, suitable for home and office humidification. 5、With USB interface, practical to use and this mini bottle cap humidifier can also improve sleep quality. 1 x Bottle Cap Humidifier2 x Cotton Swab1 x USB Charging Cable Condition: 100% Brand NewItem Type: Bottle Cap HumidifierMaterial: ABS + Electronic ComponentsColor: BluePower: 0-28W AdjustableWater Tank Capacity: Depends on the size of water bottle (Mineral Water Bottle Not Included)Amount of Fog: 350ML/HFog Time: 550ML mineral water, continuous humidification for about 5 hoursWater Bottle Requirements: The mouth of conventional mineral water bottles is applicable, and the volume of the water bottle does not limit.Power Cable Length: Approx. 1.3 meters / 4.3ftProduct Size: Approx. 7.5 x 6 cm / 3 x 2.4 in