3L Portable Battery Operated Oxygen Concentrators Machine with Pacemaker: yes

Pacemaker:       yes

Working principle PSA :(Pressure Swing Adsorption)

-Real-time three Synchronization

Standard Base

3L Portable Battery Operated Oxygen Concentrators Machine with Pacemaker: yesPortable 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.