Humidification System:Now you can take AIR-O-SWISS quality with you when you are away from home or office and enjoy healthy air anywhere! The Travel Humidifier U7146 is compact enough to fit into your travel bag. Just add your own water bottle, plug the unit in, and start enjoying clean, moist air in your room. The efficient ultrasonic technology uses highfrequency vibrations to generate a micro-fine cool mist, which is blown into the room, where it immediately evaporates. Set the Travel Humidifier in your office and at home and enjoy moist air through out the day. Thanks to the AC/DC adapter and exchangeable plugs the Travel Humidifier can be used around the world. With the use of distilled water you avoid calcification. Energy and Performance:- Mist output control for controlled humidification;- Very energy-efficient;- Ultra-quiet operation. Features and Benefits:- Light-weight design - to take it everywhere;- Travel bag included for your convenience;- Auto-Shut-Off and empty indicator;- AC/DC adapter and exchangeable plugs included for worldwide use;- Ideal for use at home, in the office or while traveling.