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.220v adapter must be purchased seperately - Model u22-5 ONLY AVAILABLE ON LARGE ORDERS OVER 10