Buy Airsep Focus Portable Oxygen Concentrator -

The unit is FAA-approved for use on commercial flights and operates on universal power (AC/DC), making it suitable for international travel and car charging. Battery Life & Power Options

It delivers a fixed pulse flow setting of 2 liters per minute (LPM) . buy airsep focus portable oxygen concentrator

For longer outings, you can use the AirBelt (optional accessory), which can extend total operation time up to 7 hours . The unit is FAA-approved for use on commercial

Typically comes with two micro batteries, each providing roughly 1.5 hours of use, for a total of 3 hours . even during shallow breathing.

Because the unit is so small, it relies on external batteries to keep its weight low:

Features "UltraSense" technology, which is highly sensitive and ensures oxygen is delivered with every breath, even during shallow breathing.