Rhythm Healthcare P2 Portable Oxygen Concentrator

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. RX is required before device is shipped   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 display.  Use  Designed for 24/7 use.  Warranty: Three years (excluding battery and sieve bed) Battery Duration Chart Setting Duration