Inogen One Rove 6 Portable Oxygen Concentrator, Certified Pre-Owned Battery:8-Cell Battery Bi-Flex pressure relief technology delivers Graham Field Chokkin Scissors Warranty One Year Limited Standard Fabric Color:Arctic - Brisa Fabric ( +$719 ) r726bl

Bi-Flex pressure relief technology delivers pressure relief at three critical points in the breathing cycle:

The HomeFill Post Valve Cylinder Replacement Assembly with Labels is designed for the HomeFill System

50 to 60Hz DC Input Range 11-16 VDC

and will even auto return to a alternating pressure mode if the system is left on static mode for more than 2 hours

Inogen One Rove 6 Portable Oxygen Concentrator, Certified Pre Owned Battery:8 Cell Battery Bi Flex pressure relief technology delivers Graham Field Chokkin Scissors Warranty One Year Limited Standard Fabric Color:Arctic Brisa Fabric ( +$719 ) r726bl Bi Flex pressure relief technology delivers pressure relief at three critical points in the breathing cycle: The HomeFill Post Valve Cylinder Replacement Assembly with Labels is designed for the HomeFill System