The air humidifier with 1.2L water tank that keeps the room humidifier working over 10 hours on a single fill, You 't need to water to humidifier multiple ! Change the water a day can reduce the growth of impurity and maintain health. This baby humidifier operate at low than 32dB silent frequency, which will not affect your work and sleep. 7-colorful soft night light could create a and sleeping atmosphere, your sleep quality! the cotton swab for 3-5 minutes until it is fully soaked using. do NOT essential oils or distilled water into the humidifier, which will cause the cotton swab to clog and unusable. do NOT loss the spring when replacing the cotton swab. This small humidifier will automatically turn off the power when it running up to 5 hours. 't worry about being damaged in the absence of water. The mini humidifier , office and travel. It is a perfect choice for your life, work or as a gift! Humidification : Mist Discharge Power (W): 2.5W Voltage (V): 5V Power supply mode: USB model: DGS178 Shape: circular Operation mode: mechanical Applicable area: 10-20 square Function: Atmosphere lamp Number of mist outlets: 1 Applicable object: household Timing function: 2-8 hours color:Green Material:ABS size:128 x 128 x 154mm Package Contents: 1 x Humidifier 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.