*NEW: Oxygen flow at gear 1~5 is pulse mode, when inhales, it wil provide oxygen , but stores oxygen when the user exhales. Equivalent to 5L continuous flow oxygen concentrator
*Lightweight: Total weight of the whole machine including battery is only 1.98kg.
*Longer duration time of battery is up to 4.5 hours, and an additional battery can be provide for backup.
*High Alititude: available for mountain climbing, After actual testing, this machine can be used at an altitude of 4680 meters.
*Pure: High oxygen concentration, ensure more than 90% oxygen concentration at 1-5 gear, meet medical-grade
