The AirSep LifeStyle is a “Pulse-Delivery Only” FAA Approved Portable Oxygen Concentrator. It delivers oxygen at settings 1-5.

Weight: 9.75 lbs
Dims: 5.5″ x 7.25″ x 16.31″
Battery Duration:
Setting 1: 50 min
Setting 2: 50 min
Setting 3: 50 min
Setting 4: 50 min
Setting 5: 50 min
The LifeStyle has an optional battery pack that will hold 3 batteries, along with 1 in the unit will give a total of 3.25 Hrs.
Manufacturer airsep.com