<ul><li>[Continuous Flow] The flow gear of the small portable oxygen concentrator is fixed at 3 liters, and the concentration is stable at 32% 3%. Continuous oxygen supply. There is no need to add water during operation. Weighing only 3 pounds, product size: 9.05 * 3.7 * 5.5in</li><li>[With External Battery] The attached external battery can be used for 2 hours when fully charged. At home or in the car, the machine can also be directly connected to the power supply for use (if you need to buy a spare battery, please consult us)</li><li>[Timing Shutdown] One-click operation, easy to operate. Three timing buttons can be set for 20-120 minutes. Equipped with a portable bag</li><li>Multi Scene UseThis oxygen concentrator machine is convenient for home and office use.</li></ul><br><br>

Health Oxygen Machine 3/min Wheelchair Portable Oxygen Generator,33%3% Suitable for Travel Use,3LBS