portable oxygen concentrator
use in car or home
Features: 1. Small in size, portable, easy to carry by trolley and bag. 2. Big LED screen, with anion function. 3. Vehicle use available. 4. Imported molecular sieve from USA. 5. Long time working, reliable and safe. 6. Three power suppliers: used in cars, uesd with an rechargeable battery outside, used with plug at home.