The Handheld Nebulizer Compressor comes with compressor, medication cup, AC power adapter, air hose, elbow, mouthpiece, and mask. Handheld Nebulizer CompressorSKU: NEB200 $79.95PriceQuantity*Add to CartPRODUCT INFO Built-in filtration Portable (small and weighs only 1/2 pound) Runs on 4 AA batteries or AC power adapter Quiet (60dBA) Fine particle size (approximately 3 microns) Nebulization rate: 0.25 ml/min or more Medication capacity: 6 ml (maximum) / 2 ml (minimum)