Oxygen Concentrator

The external battery supports continuous use for 1.5 hours.
A power cable and car cable add more options for a longer use.
Oxygen-33%, Flow rate:3 lpm, weighing only 3.3 pounds, easy to carry with one hand
Gross weight 3.3LBS.Dimensions: 9*3.7*5.5inCustomizable duration with 4 levels of auto shutdown timers.
Includes a bag for carrying