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- The built-in StabilitySelector provides comfort and an effective seal
No Forehead Support Means Fewer Red Marks Get the therapy you need
Multiple Sizes Available
Periodic breathing conditions such as Cheyne-Stokes respiration and central apneas are distinguishable from obstructed apnea or snoring events
Zen-O 12 Cell Re-Chargeable Lithium Ion Battery - Certified Pre Owned 3B Medical Replacement Filters - The built-in StabilitySelector providesCertified Pre Owned with 6 Month Warranty All battery sales are final. There are no returns on batteries. This 12 cell re chargeable lithium ion battery will power your Zen O Portable Oxygen Concentrator. Each battery lasts for 4 hours on a single charge. Battery Duration Pulse Flow: 4 hours at setting 2. Battery Duration Continuous Flow: 0. 75 hours at setting 2. Battery Recharge Time While In Use Pulse Flow: 3 hours. Battery Recharge Time While In