3L Portable Battery Operated Oxygen Concentrators Machine products Doctors only need to adjust

Doctors only need to adjust the ultrasound software to complete the probe replacement

and the state of printing mode

Oxygen purity to 29(+1/-2)%

Oxygen concentration: 30%±2%

Let the filter air-dry or place on thick towel to absorb excess water

3L Portable Battery Operated Oxygen Concentrators Machine products Doctors only need to adjustPortable Oxygen Machine Features: Multi purpose: Awesome for home, car, travel, work, Including battery. Charge 4 hours, Work Time for 2. 5 hours. If need much more time, pls click HERE Low noise: less than 45dB, night use will not affect sleep, It works with or without water, no need to refill at night. It is a good backup for your home OC, 30% purity oxygens not adjustable. Not for medical use, couldn't work 24 7 Portable and light: Size: 9*4. 3*6.