Product Details Whisper quiet. Provides moisture for dry coughs, sinus irritation and other effects caused by dry air. Supports easy breathing and congestion relief for day and night. Provides relief for dry coughs, sinus irritation and other effects caused by dry air. Tank Capacity: Runs up to 24 hours. Easy to clean, no filter required. Mist Nozzle: Multi directional mist nozzle. Humidity Control: Variable cool mist output control. Up to 2.3 gallon per day.Whisper Quiet: Provides easier breathing for a good night sleep. Safety & performance tested. Technical Specification: Type of Humidifier: ultrasonic cool mist; Power Consumption: 120 volt, 60 Hz, 38 watt; Capacity of Tank: 0.9 gallon. Running Time per Tank: up to 24 hours; Output per 24 Hours: 2.3 gallon; Suitable Room Size: approx. 250 sq ft; Acoustic Level: 35 (db) A; Additional Features: Auto-off function, variable humidity output control. Safety & performance tested. ETL listed. Made in China.