Crane 2.3 Gallon Drop-Shape Cool-Mist Humidifier. This trend forward Crane Ultrasonic Cool Mist Drop Shape Humidifier helps comfort your suffering from cough and cold symptoms, dry itchy skin and provides some allergy relief. The whisper-quiet humidifier won't disturb your sleep. This humidifier uses very little power, and provides a minimum of 10 hours of moisture, at the highest setting, from a removable 1-gallon tank. It also features an automatic shut-off switch when the tank is empty. Features include: Whisper quiet operation Auto-off function when water tank is empty Variable mist output control Removable water tank Variable humidity control feature Power on light indicator Power: 32W Water tank capacity : 3.4 liter/ 0.9 gallon Running time per tank: min 10 hours up to 55 hours Moist output: 2.3 gallon/ 8.7 liter per day Energy efficient, uses less energy than a regular household light bulb Suitable room size: Approx. 250 sq. ft. FDA registered Dimensions: 9.8" L x 9.8" W x 14.2" H Weight: 6 lbs.