Rhythm Healthcare P2 Portable Oxygen Concentrator

Product Features & Specifications Compact and lightweight. Conveniently charge a backup battery while the device is in use. Charging time 2.5 hours. (additional purchase).  High efficiency, low noise. Excellent heat dissipation. 93% O2 concentration. High absorption sieve bed. Equivalent to up to 5L. Includes AC/DC Car Charger. Meets FAA travel requirements. Battery Duration Chart Setting Duration 1 5h 00min 2 4h 00min 3 3h 00min 4 2h 14min 5 1h 50min   Size 3.3” W x 8.7” D x 6.3” H   Weight 4.37 lbs   Warm up time 2 minutes   Settings  Five Flow Settings (1-5)   Oxygen Concentration  87% - 96%   AC Power Supply 100-240v, 50-60hz (auto sensing to allow for worldwide use)   Rechargeable Battery 14.4VDC   Battery Rated Capacity 6.8Ah    Display Screen 2.8"    Battery  6800mAh, duration up to 5 hours on setting 1.        Approx. 4 hours charge time with AC.   Operation Simple control functions and easy-to-read LCD