PORTABLE HUMIDIFIER – The Homedics Ultrasonic Portable Humidifier is small, lightweight, and provides a cooling mist no matter where you use it; ideal as a bedroom humidifier, car humidifier, and for on-the-go use with the included bonus travel bag QUIET & CONVENIENT -The Homedics mini humidifier uses ultrasonic technology to ensure your mister is operating effectively and silently; it creates a visible, cooling mist with its soundless motor ALL-IN-ONE DEVICE – The portable humidifiers for bedrooms and on-the-go are convenient devices allowing you to reuse a standard water bottle up to 20 oz. and enjoy up to 9 whole hours of runtime; your mister will automatically shut off when the water bottle runs out SIMPLE INSTALLATION - This personal room humidifier is easy to install and use; simply fill a standard size water bottle with water, snap the included bottle neck adapter on the head of the water bottle and attach the bottle to your mini mister WHAT’S IN THE BOX – (1) HoMedics Personal Travel Ultrasonic Mister, (1) bottle-neck adapter, (1) AC power adapter, (1) bonus travel bag, (1) user’s manual