Patients appreciate the small product size andhandy carrying case that is easily transported wherever life takes them. Powerful delivery comparable to table-top compressor nebulizer systems provides effective relief and control of the disease. This means the NE-U22V is truly portable!! It is the smallest electronic nebulizer available, weighing just 6 ounces! This means your medications go farther so you can too! Everyone will like the convenience ofup to 4 hours of operation on 2 "AA" batteries. (Rechargeable batteries not available) Contains a universal adapter to fit a wide range of masks and T-pieces. The nebulizer head detaches for easy cleaning. Weight: 22 oz Length: 7.6" Width: 3.7" Height: 7.1" Comes with a Carrying Case.