lightweight wearable, pulse dose setting up to 3 Early stage COPD oxygen users can enjoy active lifestyles with the lightweight and durable AirSep FreeStyle. (4.4 lbs) (includes battery, A/C & D/C power supply, carry case, travel bag) 3 year concentrator 1 year battery, power supplies, standard accessories. #AS095-101-Concentrator #ASBT033-1-Battery #ASBT032-1-Desktop Charger Battery not included #FI144-1-Filter Latex Free UNSPSC#42271718