You'll love the compact size and surprising power of this Healthsmart humidifier. Limit 5 per household. Product Features: Ultrasonic technology produces a micro-fine mist. USB power supply plugs into your computer or laptop. Small design enables easy portability. Humidifier runs up to 1.5 hours on a full tank. Product Care: Manufacturer's 3-year limited warranty Product Details: 3.5"H x 3.5"W x 2.7"D Coverage area: up to 400 sq. ft. 0.02-gal. tank 40-in. cord length 2 watts Weight: 0.2 lbs. Model no. 40-680-000 Promotional offers available online at Kohls.com may vary from those offered in Kohl's stores. Size: One Size. Color: White. Gender: Unisex. Age Group: Adult.