Mini Cool Mist Humidifier, IMZ Portable [Bottle Cap Design] Ultrasonic Diffuser Night Light Air Purifier, Flexible Dispenser with USB Cable Auto Off, for Skin Moisturing,Bedroom,Office,Car -Pink Through diffusing water mist, it can increase air moisture and removes the dust in the air molecules. Mister cool off by using cold water. This environmentally-friendly humidifier helps reuse bottles & has a low power output of 2 watts. Whisper-quiet ultrasonic operation with LED light, constantly working for 6 hour with bottle full filled by water. Shuts Off Automatically When The Water Runs Out. Portable for Car, Office, Home, Yoga, Office, Spa, Bedroom, Baby Room. Perfect gift idea for family and friends. Convenient to use anytime, anywhere, this personal-use humidifier is small enough to fit into a purse, laptop bag, or suitcase etc. Included with the humidifier are 2 filters (one installed) & a USB cable. To assemble, insert the filter into the underside of the humidifier, then plug the humidifier into the USB cable & the USB cable into a USB port.