NOVPEAK USB Portable Mini Humidifiers, Detachable Cool Mist Humidifier Great Air Diffuser for Travel, Office, Cars and Hotel

Two Lenths Selectable Include long Cotton Core and short Cotton Core. Automatic Shut-Off Click the button(blue light on),4 hours automatic power-off;Click the button again(red light on),8 hours automatic power-off. Adjustable Portable Travel Humidifier Ultrasonic cool mist humidifier allows you to change the length of item body as you like.When you are staying in a hotel, working, studying or drinking coffee, you can use mugs or small glass containers by a short swab to work.When you're relaxing, driving, traveling, or yoga, you can use a large container or mineral water bottle to work with a long cotton core. Note: Mineral water,cold boild water and clean tap water are the best for the humidifier.Please note do not add Essential oils into the water tank Simple Guide to Use The Humidifier Step 1:Choose a container of appropriate length and a cotton swab, pour water into it, and soak the cotton swab for 2-5 minutes. Step 2:Put the soaked cotton swab into the humidifer tube. Step 3:Put the small humidifier in the container and plug in the USB cable. Step 4:Press the open button on the humidifier once or twice for a short time, then enjoy yourself ! Apply to different size of the containers Sutiable for mug,normal glass,bottle,mineral water.  Note:Please make sure the cotton core has soaked a few minutes before you turning it on. Mineral water,cold boild water and clean tap water are the best for the humidifier.  Product details Rate voltage:DC5V  Operating current:250-400mA  Charging port:Micro USB  Rated power:2.0W  Spray volume:30-45mL/h  1st spray time:4 hours 2nd spray time:8 hours  Product siz:84*47*233mm 84*47*173mm  Product material:ABS/silica gel/electronic componen