(http://astore.amazon.com/mybuyzone-20/detail/B00V7M9YQQ) TaoTronics Ultrasonic Humidifier Cool Mist (with Constant Humidity Mode, Mist Level Control, Timing Settings, Built-in Water Purifier, LED Nightlight, Zero Noise)The TaoTronics TT-AH001 Home Humidifier is an ultrasonic humidifier that emits water vapor to moisten dry air. It uses a microporous ceramic cartridge that filters water from micro-organisms, and calcium & magnesium ions. It is easy to clean and does not need to be replaced. The humidity level can be set so you can have the ideal humidity for your room - set it between 40-95% relative humidity and the room will remain at that level. You can also set the mist modes to high, medium, and low and then use the 360 degree nozzle to adjust the mist angle so it's right for you. As an ultrasonic humidifier, it's incredibly quiet and doesn't make a sound which is perfect to use when going to sleep. Over 1 gallon capacity and 15 hour working time on a full tank will last most of the day and well into the night. The LED display provides information including the humidity level and other modes you are using. Sleep mode turns off the LED at night so it doesn't disturb your sleep. Two handles on the top and the bottom of the unit make it convenient to replenish the water. Finally the timer sets the humidity for a set period before switching the humidifier off. We do not recommend adding any essential oil and similar chemical perfume, as they have some corrosive property. This will cause long term damage to the humidifier which will lead to water leaks. Also some people are allergic to these chemicals, and may develop medical condition if surrounded by mist coming from humidifier.