1pc Humidifier 320ml Portable Mini Humidifier Bedroom USB Desktop Auto Off Silent (Blue)-1pc Humidifier 320ml Portable Mini Humidifier Bedroom USB Desktop Auto Off Silent (Blue). 320ml Portable Mini USB Humidifier, Mini Humidifier is small, lightweight, easy to carry, super silent, powered by USB cable. 320ml water tank humidifier, 30-40ml/h volume, 2 working modes: intermittent and continuous mode. USB is full of water, moisturizing continuously for 8 hours and intermittent moisturizing for 16 hours. The humidifier will automatically stop when the usage time is exceeded. Continue to use it after restarting. Whisper mute and auto shut off, this humidifier can reduce noise to 30db, humidify quietly, won't disturb your study, work or sleep, stay away from those annoying noises; perfect for light air humidifier with specially designed night light. Create a beautiful atmosphere of starry sky and aurora, and no longer be frightened by the dark before going to bed. Mini humidifiers are suitable for clean tap or mineral water. No need to look for pure water. Two modes of this cool mist humidifier can meet your different needs. Small and convenient portable humidifier can be used in office, yoga, car, bedroom and travel scenarios. You can take it anywhere. Easy to use, prevents dry and dull skin, and meets your needs. Product size: 77*77*169MM Input voltage: DC5V Working current: 450MA