Mini Humidifier / Bottle Cap Humidifier / USB Humidifier Portable Design Cool Mist Humidifier Compatible with Coca Cola Evian for Office Home Travel (Bottle Not Included)white 1. CREATIVE PORTABLE DESIGN --- If you are searching a humidifier with very mini size, this bottle cap humidifier is your best choice. Very small size (1.8*1.8*2 inches ), you can take it everywhere you want. 2. EASY TO USE --- This mini humidifier is compatible with many bottles, like Coca Cola, Evian. You just need to find a bottle and fill some water in. It is very convenient to operate. 3. AUTO SHUTOFF -- Comes with very humanized auto shutoff function, this humidifier will turn off every 2 hours using, you do not have to worry about the safety of the product. 4. PERFECT FOR DAILY USE --- Relief from dry air, cold, flu, cracked skin in the winter and cold weather. Its really good for your health if you have one in your room or office. 5. TOTALLY SILENT --- Very calm and quite cool mist humidifier, theres no noise at all. You can sleep peacefully with this product in your room.