Caire FreeStyle Comfort 8 Cell Battery OTHER but the AC power cord

but the AC power cord must be connected before sleeping

and individual breathing rate

FAA-approved for use onboard aircraft — perfect for international and red-eye flights

Oxygen tubing and swivel connector

Regular filter replacement (typically every 1–3 months depending on environment) is recommended to ensure your 555 Compact 5L operates quietly and efficiently

Caire FreeStyle Comfort 8 Cell Battery OTHER but the AC power cordThe FreeStyle Comfort 8 Cell Battery is capable of up to 4 hours* of battery life. The battery charges to full within 3. 5 hours. The battery comes with a manufacturer's 1 year warranty. *Battery life rated at a setting of 2 Recent Verified Reviews and Ratings from our Customers, Coast to Coast.