The DeVilbiss Travel-Aire features a nebulizer capacity of up to 7ml of medication, MMAD aerosol particle size from 3.0 to 4.0 microns and a maximum nebulizer residual volume of 1.5 ml or less. The nebulizer output capacity is 0.3 cc per minute or greater. The Travel-Aire can operate off AC power, DC battery or a 12-volt DC automobile cigarette lighter power cord. The rechargeable battery life is 40 minutes allowing for two treatments per charge.The DeVilbiss Travel-Aire Compressor Nebulizer model 6810P-D includes a nebulizer kit with tubing, pediatric and adult aerosol masks, detachable battery pack, AC switch mode power supply with charging capabilities, replacement standard air filters, a convenient carrying case, a 3-year warranty on the unit and a 6-month warranty on the battery pack.