Small Volume 5 mL Compact design makes it portable Quiet at less than 65 dBA Compact and lightweight at 2.73 lbs Comes complete with compressor, nebulizer, tee, mouthpiece, reservoir tube, tubing and five extra filters Metal piston for durability One-button operation Delivery Method Mouthpiece Delivery Nebulizer Type Small Volume 7 Foot Oxygen Tube Length Reservoir Capacity 5 mL Reservoir Solution Unfilled 6 Inch Reservoir Tube Length Reservoir Type Medication Cup 5 air filters 5 year warranty