Using ultrasonic technology, the H7 funnels room temperature mist through its sweeping organic silhouette. We've created a real statement piece not to be hidden away. Key Features - Tank Capacity of 2.6 liters Runs up to 22 hours Humidifies up to 650 square feet Aroma Tabs allow for added Essential Oils Anti-microbial tank Equiped Timer Mode Automatic Shut Off when Tank is Empty