Ximico&reg; Vaporb USB Ultrasonic Humidifier Usb Mini Humidifier Air Humidifier with USB Cable for Office Home Weight:0.08KG Material: ABS,MADE IN CHINA Effective area: 10 to 20 square meters	 Working voice: &lt;36db Power: USB/DC5V All Ximico products are backed up with LIFETIME WARRANTEE - For any reason you are unsatisfied with our product at any time, simply contact support for exchange or refund.