This Crane Cool Mist Humidifier provides additional comfort to cold symptoms, dry itchy skin, and chapped lips. The whisper quiet humidifier won't disturb sleep and operates on a low power consumption providing a minimum of 11 hours of moisture from a removable 0.9 gallon water tank. It includes an automatic shut off safety feature when water tank is empty. A Splash of Color, Naturally Ultrasonic cool mist operation Increases air moisture for easier breathing and a good night's sleep Relieves cough, cold, and flu symptoms, including nasal congestion, dry cough, sinus irritation, nose bleeds, dry skin Removable 0.9 gallon water tank runs whisper quiet 11-24 hours Mists up to 2.3 gallons of moisture per day Effectively humidifies rooms up to 250 square feet 360-degree mist nozzle and variable mist output and humidity control settings Auto-Off function activates when water tank is empty Uses less energy than a standard household light bulb Does not require a filter Power on light indicator Voltage: 120 volts