The AirSep FreeStyle is a lightweight Portable Oxygen Concentrator offering pulse settings 1–3, while the AirSep FreeStyle 5 has the highest pulse output of any wearable Portable Oxygen Concentrator.

FreeStyle offers pulse settings 1-3 in a 4.4 lb (2.0 kg) package while the 6.2 lb. (2.8 kg) FreeStyle 5 provides the highest oxygen output of any wearable POC with settings 1-5, producing up to 1000mL per minute. The FreeStyle family units can operate on internal rechargeable batteries, AC power supply, and DC automotive power supply.

The optional External Battery Cartridge and AirBelt are available for extended battery durations. FreeStyle and FreeStyle 5 are both equipped with UltraSense™ technology, which provides the most sensitive pulse dose delivery.

For convenience, the FreeStyle and FreeStyle 5 can be worn by shoulder strap, backpack harness, or carrying case. The carrying case contains pockets to hold the optional External Battery Cartridges. Both FreeStyles are FAA-approved for on-board, in-flight use.