The Invacare Stratos Portable Plus is a sleek, new portable compressor that will offer speed, ease-of-use and stylish design in one compact package. Small enough to fit in the palm of your hand, it will be ideal for those who desire mobility, expediency and efficiency in an aerosol delivery device.Mobile - small size, quiet operation and battery pack (sold separately, model #IRC1731) will allow the unit to be used almost anywhereEconomical - premium product that is priced to fit the needs of the managed-care market.Flexible - can be powered using the AC power cord in a wall outlet, using the DC adapter in a car, or using the optional battery pack.Powerful enough to drive a standard nebulizer. Order model #MS2700 for replacement reusable nebulizers.Three year limited warranty - UL listedPower: 100-120 volts~, 50-60 Hz, 12VDC, 1.4A Operating Flow Rate: 3.5 LPM Pressure: 29 PSI (max) Product Weight: 1 lbs. (435 g) without battery pack1.4 lbs. (626 g) with battery pack Dimensions: Without battery pack: 4.1L x 3.6"W x 1.6"H With battery pack: 4.1"L x 3.6"W x 2.6"H"